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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
* OS/2 port by Paul Slootman
* VMS merge by Zoltan Arpadffy
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* os_unix.c -- code for all flavors of Unix (BSD, SYSV, SVR4, POSIX, ...)
* Also for OS/2, using the excellent EMX package!!!
* Also for BeOS and Atari MiNT.
*
* A lot of this file was originally written by Juergen Weigert and later
* changed beyond recognition.
*/
/*
* Some systems have a prototype for select() that has (int *) instead of
* (fd_set *), which is wrong. This define removes that prototype. We define
* our own prototype below.
* Don't use it for the Mac, it causes a warning for precompiled headers.
* TODO: use a configure check for precompiled headers?
*/
#ifndef __APPLE__
# define select select_declared_wrong
#endif
#include "vim.h"
#ifdef FEAT_MZSCHEME
# include "if_mzsch.h"
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include "os_unixx.h" /* unix includes for os_unix.c only */
#ifdef USE_XSMP
# include <X11/SM/SMlib.h>
#endif
/*
* Use this prototype for select, some include files have a wrong prototype
*/
#undef select
#ifdef __BEOS__
# define select beos_select
#endif
#if defined(HAVE_SELECT)
extern int select __ARGS((int, fd_set *, fd_set *, fd_set *, struct timeval *));
#endif
#ifdef FEAT_MOUSE_GPM
# include <gpm.h>
/* <linux/keyboard.h> contains defines conflicting with "keymap.h",
* I just copied relevant defines here. A cleaner solution would be to put gpm
* code into separate file and include there linux/keyboard.h
*/
/* #include <linux/keyboard.h> */
# define KG_SHIFT 0
# define KG_CTRL 2
# define KG_ALT 3
# define KG_ALTGR 1
# define KG_SHIFTL 4
# define KG_SHIFTR 5
# define KG_CTRLL 6
# define KG_CTRLR 7
# define KG_CAPSSHIFT 8
static void gpm_close __ARGS((void));
static int gpm_open __ARGS((void));
static int mch_gpm_process __ARGS((void));
#endif
/*
* end of autoconf section. To be extended...
*/
/* Are the following #ifdefs still required? And why? Is that for X11? */
#if defined(ESIX) || defined(M_UNIX) && !defined(SCO)
# ifdef SIGWINCH
# undef SIGWINCH
# endif
# ifdef TIOCGWINSZ
# undef TIOCGWINSZ
# endif
#endif
#if defined(SIGWINDOW) && !defined(SIGWINCH) /* hpux 9.01 has it */
# define SIGWINCH SIGWINDOW
#endif
#ifdef FEAT_X11
# include <X11/Xlib.h>
# include <X11/Xutil.h>
# include <X11/Xatom.h>
# ifdef FEAT_XCLIPBOARD
# include <X11/Intrinsic.h>
# include <X11/Shell.h>
# include <X11/StringDefs.h>
static Widget xterm_Shell = (Widget)0;
static void xterm_update __ARGS((void));
# endif
# if defined(FEAT_XCLIPBOARD) || defined(FEAT_TITLE)
Window x11_window = 0;
# endif
Display *x11_display = NULL;
# ifdef FEAT_TITLE
static int get_x11_windis __ARGS((void));
static void set_x11_title __ARGS((char_u *));
static void set_x11_icon __ARGS((char_u *));
# endif
#endif
#ifdef FEAT_TITLE
static int get_x11_title __ARGS((int));
static int get_x11_icon __ARGS((int));
static char_u *oldtitle = NULL;
static int did_set_title = FALSE;
static char_u *oldicon = NULL;
static int did_set_icon = FALSE;
#endif
static void may_core_dump __ARGS((void));
static int WaitForChar __ARGS((long));
#if defined(__BEOS__)
int RealWaitForChar __ARGS((int, long, int *));
#else
static int RealWaitForChar __ARGS((int, long, int *));
#endif
#ifdef FEAT_XCLIPBOARD
static int do_xterm_trace __ARGS((void));
#define XT_TRACE_DELAY 50 /* delay for xterm tracing */
#endif
static void handle_resize __ARGS((void));
#if defined(SIGWINCH)
static RETSIGTYPE sig_winch __ARGS(SIGPROTOARG);
#endif
#if defined(SIGINT)
static RETSIGTYPE catch_sigint __ARGS(SIGPROTOARG);
#endif
#if defined(SIGPWR)
static RETSIGTYPE catch_sigpwr __ARGS(SIGPROTOARG);
#endif
#if defined(SIGALRM) && defined(FEAT_X11) \
&& defined(FEAT_TITLE) && !defined(FEAT_GUI_GTK)
# define SET_SIG_ALARM
static RETSIGTYPE sig_alarm __ARGS(SIGPROTOARG);
static int sig_alarm_called;
#endif
static RETSIGTYPE deathtrap __ARGS(SIGPROTOARG);
static void catch_int_signal __ARGS((void));
static void set_signals __ARGS((void));
static void catch_signals __ARGS((RETSIGTYPE (*func_deadly)(), RETSIGTYPE (*func_other)()));
#ifndef __EMX__
static int have_wildcard __ARGS((int, char_u **));
static int have_dollars __ARGS((int, char_u **));
#endif
#ifndef NO_EXPANDPATH
static int pstrcmp __ARGS((const void *, const void *));
static int unix_expandpath __ARGS((garray_T *gap, char_u *path, int wildoff, int flags));
# if defined(MACOS_X) && defined(FEAT_MBYTE)
extern char_u *mac_precompose_path __ARGS((char_u *decompPath, size_t decompLen, size_t *precompLen));
# endif
#endif
#if defined(MACOS_X) && defined(FEAT_MBYTE)
extern void mac_conv_init __ARGS((void));
extern void mac_conv_cleanup __ARGS((void));
#endif
#ifndef __EMX__
static int save_patterns __ARGS((int num_pat, char_u **pat, int *num_file, char_u ***file));
#endif
#ifndef SIG_ERR
# define SIG_ERR ((RETSIGTYPE (*)())-1)
#endif
static int do_resize = FALSE;
#ifndef __EMX__
static char_u *extra_shell_arg = NULL;
static int show_shell_mess = TRUE;
#endif
static int deadly_signal = 0; /* The signal we caught */
static int curr_tmode = TMODE_COOK; /* contains current terminal mode */
#ifdef USE_XSMP
typedef struct
{
SmcConn smcconn; /* The SM connection ID */
IceConn iceconn; /* The ICE connection ID */
Bool save_yourself; /* If we're in the middle of a save_yourself */
Bool shutdown; /* If we're in shutdown mode */
} xsmp_config_T;
static xsmp_config_T xsmp;
#endif
#ifdef SYS_SIGLIST_DECLARED
/*
* I have seen
* extern char *_sys_siglist[NSIG];
* on Irix, Linux, NetBSD and Solaris. It contains a nice list of strings
* that describe the signals. That is nearly what we want here. But
* autoconf does only check for sys_siglist (without the underscore), I
* do not want to change everything today.... jw.
* This is why AC_DECL_SYS_SIGLIST is commented out in configure.in
*/
#endif
static struct signalinfo
{
int sig; /* Signal number, eg. SIGSEGV etc */
char *name; /* Signal name (not char_u!). */
char deadly; /* Catch as a deadly signal? */
} signal_info[] =
{
#ifdef SIGHUP
{SIGHUP, "HUP", TRUE},
#endif
#ifdef SIGQUIT
{SIGQUIT, "QUIT", TRUE},
#endif
#ifdef SIGILL
{SIGILL, "ILL", TRUE},
#endif
#ifdef SIGTRAP
{SIGTRAP, "TRAP", TRUE},
#endif
#ifdef SIGABRT
{SIGABRT, "ABRT", TRUE},
#endif
#ifdef SIGEMT
{SIGEMT, "EMT", TRUE},
#endif
#ifdef SIGFPE
{SIGFPE, "FPE", TRUE},
#endif
#ifdef SIGBUS
{SIGBUS, "BUS", TRUE},
#endif
#ifdef SIGSEGV
{SIGSEGV, "SEGV", TRUE},
#endif
#ifdef SIGSYS
{SIGSYS, "SYS", TRUE},
#endif
#ifdef SIGALRM
{SIGALRM, "ALRM", FALSE}, /* Perl's alarm() can trigger it */
#endif
#ifdef SIGTERM
{SIGTERM, "TERM", TRUE},
#endif
#ifdef SIGVTALRM
{SIGVTALRM, "VTALRM", TRUE},
#endif
#if defined(SIGPROF) && !defined(FEAT_MZSCHEME)
/* MzScheme uses SIGPROF for its own needs */
{SIGPROF, "PROF", TRUE},
#endif
#ifdef SIGXCPU
{SIGXCPU, "XCPU", TRUE},
#endif
#ifdef SIGXFSZ
{SIGXFSZ, "XFSZ", TRUE},
#endif
#ifdef SIGUSR1
{SIGUSR1, "USR1", TRUE},
#endif
#ifdef SIGUSR2
{SIGUSR2, "USR2", TRUE},
#endif
#ifdef SIGINT
{SIGINT, "INT", FALSE},
#endif
#ifdef SIGWINCH
{SIGWINCH, "WINCH", FALSE},
#endif
#ifdef SIGTSTP
{SIGTSTP, "TSTP", FALSE},
#endif
#ifdef SIGPIPE
{SIGPIPE, "PIPE", FALSE},
#endif
{-1, "Unknown!", FALSE}
};
void
mch_write(s, len)
char_u *s;
int len;
{
write(1, (char *)s, len);
if (p_wd) /* Unix is too fast, slow down a bit more */
RealWaitForChar(read_cmd_fd, p_wd, NULL);
}
/*
* mch_inchar(): low level input funcion.
* Get a characters from the keyboard.
* Return the number of characters that are available.
* If wtime == 0 do not wait for characters.
* If wtime == n wait a short time for characters.
* If wtime == -1 wait forever for characters.
*/
int
mch_inchar(buf, maxlen, wtime, tb_change_cnt)
char_u *buf;
int maxlen;
long wtime; /* don't use "time", MIPS cannot handle it */
int tb_change_cnt;
{
int len;
/* Check if window changed size while we were busy, perhaps the ":set
* columns=99" command was used. */
while (do_resize)
handle_resize();
if (wtime >= 0)
{
while (WaitForChar(wtime) == 0) /* no character available */
{
if (!do_resize) /* return if not interrupted by resize */
return 0;
handle_resize();
}
}
else /* wtime == -1 */
{
/*
* If there is no character available within 'updatetime' seconds
* flush all the swap files to disk.
* Also done when interrupted by SIGWINCH.
*/
if (WaitForChar(p_ut) == 0)
{
#ifdef FEAT_AUTOCMD
if (!did_cursorhold
&& has_cursorhold()
&& get_real_state() == NORMAL_BUSY
&& maxlen >= 3
&& !typebuf_changed(tb_change_cnt))
{
buf[0] = K_SPECIAL;
buf[1] = KS_EXTRA;
buf[2] = (int)KE_CURSORHOLD;
return 3;
}
#endif
updatescript(0);
}
}
for (;;) /* repeat until we got a character */
{
while (do_resize) /* window changed size */
handle_resize();
/*
* we want to be interrupted by the winch signal
*/
WaitForChar(-1L);
if (do_resize) /* interrupted by SIGWINCH signal */
continue;
/* If input was put directly in typeahead buffer bail out here. */
if (typebuf_changed(tb_change_cnt))
return 0;
/*
* For some terminals we only get one character at a time.
* We want the get all available characters, so we could keep on
* trying until none is available
* For some other terminals this is quite slow, that's why we don't do
* it.
*/
len = read_from_input_buf(buf, (long)maxlen);
if (len > 0)
{
#ifdef OS2
int i;
for (i = 0; i < len; i++)
if (buf[i] == 0)
buf[i] = K_NUL;
#endif
return len;
}
}
}
static void
handle_resize()
{
do_resize = FALSE;
shell_resized();
}
/*
* return non-zero if a character is available
*/
int
mch_char_avail()
{
return WaitForChar(0L);
}
#if defined(HAVE_TOTAL_MEM) || defined(PROTO)
# ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
# endif
# if defined(HAVE_SYS_SYSCTL_H) && defined(HAVE_SYSCTL)
# include <sys/sysctl.h>
# endif
# if defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)
# include <sys/sysinfo.h>
# endif
/*
* Return total amount of memory available. Doesn't change when memory has
* been allocated.
*/
/* ARGSUSED */
long_u
mch_total_mem(special)
int special;
{
# ifdef __EMX__
return ulimit(3, 0L); /* always 32MB? */
# else
long_u mem = 0;
# ifdef HAVE_SYSCTL
int mib[2], physmem;
size_t len;
/* BSD way of getting the amount of RAM available. */
mib[0] = CTL_HW;
mib[1] = HW_USERMEM;
len = sizeof(physmem);
if (sysctl(mib, 2, &physmem, &len, NULL, 0) == 0)
mem = (long_u)physmem;
# endif
# if defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)
if (mem == 0)
{
struct sysinfo sinfo;
/* Linux way of getting amount of RAM available */
if (sysinfo(&sinfo) == 0)
mem = sinfo.totalram;
}
# endif
# ifdef HAVE_SYSCONF
if (mem == 0)
{
long pagesize, pagecount;
/* Solaris way of getting amount of RAM available */
pagesize = sysconf(_SC_PAGESIZE);
pagecount = sysconf(_SC_PHYS_PAGES);
if (pagesize > 0 && pagecount > 0)
mem = (long_u)pagesize * pagecount;
}
# endif
/* Return the minimum of the physical memory and the user limit, because
* using more than the user limit may cause Vim to be terminated. */
# if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)
{
struct rlimit rlp;
if (getrlimit(RLIMIT_DATA, &rlp) == 0
&& rlp.rlim_cur < ((rlim_t)1 << (sizeof(long_u) * 8 - 1))
# ifdef RLIM_INFINITY
&& rlp.rlim_cur != RLIM_INFINITY
# endif
&& (long_u)rlp.rlim_cur < mem
)
return (long_u)rlp.rlim_cur;
}
# endif
if (mem > 0)
return mem;
return (long_u)0x7fffffff;
# endif
}
#endif
void
mch_delay(msec, ignoreinput)
long msec;
int ignoreinput;
{
int old_tmode;
#ifdef FEAT_MZSCHEME
long total = msec; /* remember original value */
#endif
if (ignoreinput)
{
/* Go to cooked mode without echo, to allow SIGINT interrupting us
* here */
old_tmode = curr_tmode;
if (curr_tmode == TMODE_RAW)
settmode(TMODE_SLEEP);
/*
* Everybody sleeps in a different way...
* Prefer nanosleep(), some versions of usleep() can only sleep up to
* one second.
*/
#ifdef FEAT_MZSCHEME
do
{
/* if total is large enough, wait by portions in p_mzq */
if (total > p_mzq)
msec = p_mzq;
else
msec = total;
total -= msec;
#endif
#ifdef HAVE_NANOSLEEP
{
struct timespec ts;
ts.tv_sec = msec / 1000;
ts.tv_nsec = (msec % 1000) * 1000000;
(void)nanosleep(&ts, NULL);
}
#else
# ifdef HAVE_USLEEP
while (msec >= 1000)
{
usleep((unsigned int)(999 * 1000));
msec -= 999;
}
usleep((unsigned int)(msec * 1000));
# else
# ifndef HAVE_SELECT
poll(NULL, 0, (int)msec);
# else
# ifdef __EMX__
_sleep2(msec);
# else
{
struct timeval tv;
tv.tv_sec = msec / 1000;
tv.tv_usec = (msec % 1000) * 1000;
/*
* NOTE: Solaris 2.6 has a bug that makes select() hang here. Get
* a patch from Sun to fix this. Reported by Gunnar Pedersen.
*/
select(0, NULL, NULL, NULL, &tv);
}
# endif /* __EMX__ */
# endif /* HAVE_SELECT */
# endif /* HAVE_NANOSLEEP */
#endif /* HAVE_USLEEP */
#ifdef FEAT_MZSCHEME
}
while (total > 0);
#endif
settmode(old_tmode);
}
else
WaitForChar(msec);
}
#if 0 /* disabled, no longer needed now that regmatch() is not recursive */
# if defined(HAVE_GETRLIMIT)
# define HAVE_STACK_LIMIT
# endif
#endif
#if defined(HAVE_STACK_LIMIT) \
|| (!defined(HAVE_SIGALTSTACK) && defined(HAVE_SIGSTACK))
# define HAVE_CHECK_STACK_GROWTH
/*
* Support for checking for an almost-out-of-stack-space situation.
*/
/*
* Return a pointer to an item on the stack. Used to find out if the stack
* grows up or down.
*/
static void check_stack_growth __ARGS((char *p));
static int stack_grows_downwards;
/*
* Find out if the stack grows upwards or downwards.
* "p" points to a variable on the stack of the caller.
*/
static void
check_stack_growth(p)
char *p;
{
int i;
stack_grows_downwards = (p > (char *)&i);
}
#endif
#if defined(HAVE_STACK_LIMIT) || defined(PROTO)
static char *stack_limit = NULL;
#if defined(_THREAD_SAFE) && defined(HAVE_PTHREAD_NP_H)
# include <pthread.h>
# include <pthread_np.h>
#endif
/*
* Find out until how var the stack can grow without getting into trouble.
* Called when starting up and when switching to the signal stack in
* deathtrap().
*/
static void
get_stack_limit()
{
struct rlimit rlp;
int i;
long lim;
/* Set the stack limit to 15/16 of the allowable size. Skip this when the
* limit doesn't fit in a long (rlim_cur might be "long long"). */
if (getrlimit(RLIMIT_STACK, &rlp) == 0
&& rlp.rlim_cur < ((rlim_t)1 << (sizeof(long_u) * 8 - 1))
# ifdef RLIM_INFINITY
&& rlp.rlim_cur != RLIM_INFINITY
# endif
)
{
lim = (long)rlp.rlim_cur;
#if defined(_THREAD_SAFE) && defined(HAVE_PTHREAD_NP_H)
{
pthread_attr_t attr;
size_t size;
/* On FreeBSD the initial thread always has a fixed stack size, no
* matter what the limits are set to. Normally it's 1 Mbyte. */
pthread_attr_init(&attr);
if (pthread_attr_get_np(pthread_self(), &attr) == 0)
{
pthread_attr_getstacksize(&attr, &size);
if (lim > (long)size)
lim = (long)size;
}
pthread_attr_destroy(&attr);
}
#endif
if (stack_grows_downwards)
{
stack_limit = (char *)((long)&i - (lim / 16L * 15L));
if (stack_limit >= (char *)&i)
/* overflow, set to 1/16 of current stack position */
stack_limit = (char *)((long)&i / 16L);
}
else
{
stack_limit = (char *)((long)&i + (lim / 16L * 15L));
if (stack_limit <= (char *)&i)
stack_limit = NULL; /* overflow */
}
}
}
/*
* Return FAIL when running out of stack space.
* "p" must point to any variable local to the caller that's on the stack.
*/
int
mch_stackcheck(p)
char *p;
{
if (stack_limit != NULL)
{
if (stack_grows_downwards)
{
if (p < stack_limit)
return FAIL;
}
else if (p > stack_limit)
return FAIL;
}
return OK;
}
#endif
#if defined(HAVE_SIGALTSTACK) || defined(HAVE_SIGSTACK)
/*
* Support for using the signal stack.
* This helps when we run out of stack space, which causes a SIGSEGV. The
* signal handler then must run on another stack, since the normal stack is
* completely full.
*/
#ifndef SIGSTKSZ
# define SIGSTKSZ 8000 /* just a guess of how much stack is needed... */
#endif
# ifdef HAVE_SIGALTSTACK
static stack_t sigstk; /* for sigaltstack() */
# else
static struct sigstack sigstk; /* for sigstack() */
# endif
static void init_signal_stack __ARGS((void));
static char *signal_stack;
static void
init_signal_stack()
{
if (signal_stack != NULL)
{
# ifdef HAVE_SIGALTSTACK
# ifdef __APPLE__
/* missing prototype. Adding it to osdef?.h.in doesn't work, because
* "struct sigaltstack" needs to be declared. */
extern int sigaltstack __ARGS((const struct sigaltstack *ss, struct sigaltstack *oss));
# endif
# ifdef HAVE_SS_BASE
sigstk.ss_base = signal_stack;
# else
sigstk.ss_sp = signal_stack;
# endif
sigstk.ss_size = SIGSTKSZ;
sigstk.ss_flags = 0;
(void)sigaltstack(&sigstk, NULL);
# else
sigstk.ss_sp = signal_stack;
if (stack_grows_downwards)
sigstk.ss_sp += SIGSTKSZ - 1;
sigstk.ss_onstack = 0;
(void)sigstack(&sigstk, NULL);
# endif
}
}
#endif
/*
* We need correct potatotypes for a signal function, otherwise mean compilers
* will barf when the second argument to signal() is ``wrong''.
* Let me try it with a few tricky defines from my own osdef.h (jw).
*/
#if defined(SIGWINCH)
/* ARGSUSED */
static RETSIGTYPE
sig_winch SIGDEFARG(sigarg)
{
/* this is not required on all systems, but it doesn't hurt anybody */
signal(SIGWINCH, (RETSIGTYPE (*)())sig_winch);
do_resize = TRUE;
SIGRETURN;
}
#endif
#if defined(SIGINT)
/* ARGSUSED */
static RETSIGTYPE
catch_sigint SIGDEFARG(sigarg)
{
/* this is not required on all systems, but it doesn't hurt anybody */
signal(SIGINT, (RETSIGTYPE (*)())catch_sigint);
got_int = TRUE;
SIGRETURN;
}
#endif
#if defined(SIGPWR)
/* ARGSUSED */
static RETSIGTYPE
catch_sigpwr SIGDEFARG(sigarg)
{
/* this is not required on all systems, but it doesn't hurt anybody */
signal(SIGPWR, (RETSIGTYPE (*)())catch_sigpwr);
/*
* I'm not sure we get the SIGPWR signal when the system is really going
* down or when the batteries are almost empty. Just preserve the swap
* files and don't exit, that can't do any harm.
*/
ml_sync_all(FALSE, FALSE);
SIGRETURN;
}
#endif
#ifdef SET_SIG_ALARM
/*
* signal function for alarm().
*/
/* ARGSUSED */
static RETSIGTYPE
sig_alarm SIGDEFARG(sigarg)
{
/* doesn't do anything, just to break a system call */
sig_alarm_called = TRUE;
SIGRETURN;
}
#endif
#if (defined(HAVE_SETJMP_H) \
&& ((defined(FEAT_X11) && defined(FEAT_XCLIPBOARD)) \
|| defined(FEAT_LIBCALL))) \
|| defined(PROTO)
/*
* A simplistic version of setjmp() that only allows one level of using.
* Don't call twice before calling mch_endjmp()!.
* Usage:
* mch_startjmp();
* if (SETJMP(lc_jump_env) != 0)
* {
* mch_didjmp();
* EMSG("crash!");
* }
* else
* {
* do_the_work;
* mch_endjmp();
* }
* Note: Can't move SETJMP() here, because a function calling setjmp() must
* not return before the saved environment is used.
* Returns OK for normal return, FAIL when the protected code caused a
* problem and LONGJMP() was used.
*/
void
mch_startjmp()
{
#ifdef SIGHASARG
lc_signal = 0;
#endif
lc_active = TRUE;
}
void
mch_endjmp()
{
lc_active = FALSE;
}
void
mch_didjmp()
{
# if defined(HAVE_SIGALTSTACK) || defined(HAVE_SIGSTACK)
/* On FreeBSD the signal stack has to be reset after using siglongjmp(),
* otherwise catching the signal only works once. */
init_signal_stack();
# endif
}
#endif
/*
* This function handles deadly signals.
* It tries to preserve any swap file and exit properly.
* (partly from Elvis).
*/
static RETSIGTYPE
deathtrap SIGDEFARG(sigarg)
{
static int entered = 0; /* count the number of times we got here.
Note: when memory has been corrupted
this may get an arbitrary value! */
#ifdef SIGHASARG
int i;
#endif
#if defined(HAVE_SETJMP_H)
/*
* Catch a crash in protected code.
* Restores the environment saved in lc_jump_env, which looks like
* SETJMP() returns 1.
*/
if (lc_active)
{
# if defined(SIGHASARG)
lc_signal = sigarg;
# endif
lc_active = FALSE; /* don't jump again */
LONGJMP(lc_jump_env, 1);
/* NOTREACHED */
}
#endif
#ifdef SIGHASARG
/* When SIGHUP, SIGQUIT, etc. are blocked: postpone the effect and return
* here. This avoids that a non-reentrant function is interrupted, e.g.,
* free(). Calling free() again may then cause a crash. */
if (entered == 0
&& (0
# ifdef SIGHUP
|| sigarg == SIGHUP
# endif
# ifdef SIGQUIT
|| sigarg == SIGQUIT
# endif
# ifdef SIGTERM
|| sigarg == SIGTERM
# endif
# ifdef SIGPWR
|| sigarg == SIGPWR
# endif
# ifdef SIGUSR1
|| sigarg == SIGUSR1
# endif
# ifdef SIGUSR2
|| sigarg == SIGUSR2
# endif
)
&& !handle_signal(sigarg))
SIGRETURN;
#endif
/* Remember how often we have been called. */
++entered;
#ifdef FEAT_EVAL
/* Set the v:dying variable. */
set_vim_var_nr(VV_DYING, (long)entered);
#endif
#ifdef HAVE_STACK_LIMIT
/* Since we are now using the signal stack, need to reset the stack
* limit. Otherwise using a regexp will fail. */
get_stack_limit();
#endif
#ifdef SIGHASARG
/* try to find the name of this signal */
for (i = 0; signal_info[i].sig != -1; i++)
if (sigarg == signal_info[i].sig)
break;
deadly_signal = sigarg;
#endif
full_screen = FALSE; /* don't write message to the GUI, it might be
* part of the problem... */
/*
* If something goes wrong after entering here, we may get here again.
* When this happens, give a message and try to exit nicely (resetting the
* terminal mode, etc.)
* When this happens twice, just exit, don't even try to give a message,
* stack may be corrupt or something weird.
* When this still happens again (or memory was corrupted in such a way
* that "entered" was clobbered) use _exit(), don't try freeing resources.
*/
if (entered >= 3)
{
reset_signals(); /* don't catch any signals anymore */
may_core_dump();
if (entered >= 4)
_exit(8);
exit(7);
}
if (entered == 2)
{
OUT_STR(_("Vim: Double signal, exiting\n"));
out_flush();
getout(1);
}
#ifdef SIGHASARG
sprintf((char *)IObuff, _("Vim: Caught deadly signal %s\n"),
signal_info[i].name);
#else
sprintf((char *)IObuff, _("Vim: Caught deadly signal\n"));
#endif
preserve_exit(); /* preserve files and exit */
#ifdef NBDEBUG
reset_signals();
may_core_dump();
abort();
#endif
SIGRETURN;
}
#ifdef _REENTRANT
/*
* On Solaris with multi-threading, suspending might not work immediately.
* Catch the SIGCONT signal, which will be used as an indication whether the
* suspending has been done or not.
*/
static int sigcont_received;
static RETSIGTYPE sigcont_handler __ARGS(SIGPROTOARG);
/*
* signal handler for SIGCONT
*/
/* ARGSUSED */
static RETSIGTYPE
sigcont_handler SIGDEFARG(sigarg)
{
sigcont_received = TRUE;
SIGRETURN;
}
#endif
/*
* If the machine has job control, use it to suspend the program,
* otherwise fake it by starting a new shell.
*/
void
mch_suspend()
{
/* BeOS does have SIGTSTP, but it doesn't work. */
#if defined(SIGTSTP) && !defined(__BEOS__)
out_flush(); /* needed to make cursor visible on some systems */
settmode(TMODE_COOK);
out_flush(); /* needed to disable mouse on some systems */
# if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
/* Since we are going to sleep, we can't respond to requests for the X
* selections. Lose them, otherwise other applications will hang. But
* first copy the text to cut buffer 0. */
if (clip_star.owned || clip_plus.owned)
{
x11_export_final_selection();
if (clip_star.owned)
clip_lose_selection(&clip_star);
if (clip_plus.owned)
clip_lose_selection(&clip_plus);
if (x11_display != NULL)
XFlush(x11_display);
}
# endif
# ifdef _REENTRANT
sigcont_received = FALSE;
# endif
kill(0, SIGTSTP); /* send ourselves a STOP signal */
# ifdef _REENTRANT
/* When we didn't suspend immediately in the kill(), do it now. Happens
* on multi-threaded Solaris. */
if (!sigcont_received)
pause();
# endif
# ifdef FEAT_TITLE
/*
* Set oldtitle to NULL, so the current title is obtained again.
*/
vim_free(oldtitle);
oldtitle = NULL;
# endif
settmode(TMODE_RAW);
need_check_timestamps = TRUE;
did_check_timestamps = FALSE;
#else
suspend_shell();
#endif
}
void
mch_init()
{
Columns = 80;
Rows = 24;
out_flush();
set_signals();
#if defined(MACOS_X) && defined(FEAT_MBYTE)
mac_conv_init();
#endif
}
static void
set_signals()
{
#if defined(SIGWINCH)
/*
* WINDOW CHANGE signal is handled with sig_winch().
*/
signal(SIGWINCH, (RETSIGTYPE (*)())sig_winch);
#endif
/*
* We want the STOP signal to work, to make mch_suspend() work.
* For "rvim" the STOP signal is ignored.
*/
#ifdef SIGTSTP
signal(SIGTSTP, restricted ? SIG_IGN : SIG_DFL);
#endif
#ifdef _REENTRANT
signal(SIGCONT, sigcont_handler);
#endif
/*
* We want to ignore breaking of PIPEs.
*/
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
#ifdef SIGINT
catch_int_signal();
#endif
/*
* Ignore alarm signals (Perl's alarm() generates it).
*/
#ifdef SIGALRM
signal(SIGALRM, SIG_IGN);
#endif
/*
* Catch SIGPWR (power failure?) to preserve the swap files, so that no
* work will be lost.
*/
#ifdef SIGPWR
signal(SIGPWR, (RETSIGTYPE (*)())catch_sigpwr);
#endif
/*
* Arrange for other signals to gracefully shutdown Vim.
*/
catch_signals(deathtrap, SIG_ERR);
#if defined(FEAT_GUI) && defined(SIGHUP)
/*
* When the GUI is running, ignore the hangup signal.
*/
if (gui.in_use)
signal(SIGHUP, SIG_IGN);
#endif
}
#if defined(SIGINT) || defined(PROTO)
/*
* Catch CTRL-C (only works while in Cooked mode).
*/
static void
catch_int_signal()
{
signal(SIGINT, (RETSIGTYPE (*)())catch_sigint);
}
#endif
void
reset_signals()
{
catch_signals(SIG_DFL, SIG_DFL);
#ifdef _REENTRANT
/* SIGCONT isn't in the list, because its default action is ignore */
signal(SIGCONT, SIG_DFL);
#endif
}
static void
catch_signals(func_deadly, func_other)
RETSIGTYPE (*func_deadly)();
RETSIGTYPE (*func_other)();
{
int i;
for (i = 0; signal_info[i].sig != -1; i++)
if (signal_info[i].deadly)
{
#if defined(HAVE_SIGALTSTACK) && defined(HAVE_SIGACTION)
struct sigaction sa;
/* Setup to use the alternate stack for the signal function. */
sa.sa_handler = func_deadly;
sigemptyset(&sa.sa_mask);
# if defined(__linux__) && defined(_REENTRANT)
/* On Linux, with glibc compiled for kernel 2.2, there is a bug in
* thread handling in combination with using the alternate stack:
* pthread library functions try to use the stack pointer to
* identify the current thread, causing a SEGV signal, which
* recursively calls deathtrap() and hangs. */
sa.sa_flags = 0;
# else
sa.sa_flags = SA_ONSTACK;
# endif
sigaction(signal_info[i].sig, &sa, NULL);
#else
# if defined(HAVE_SIGALTSTACK) && defined(HAVE_SIGVEC)
struct sigvec sv;
/* Setup to use the alternate stack for the signal function. */
sv.sv_handler = func_deadly;
sv.sv_mask = 0;
sv.sv_flags = SV_ONSTACK;
sigvec(signal_info[i].sig, &sv, NULL);
# else
signal(signal_info[i].sig, func_deadly);
# endif
#endif
}
else if (func_other != SIG_ERR)
signal(signal_info[i].sig, func_other);
}
/*
* Handling of SIGHUP, SIGQUIT and SIGTERM:
* "when" == a signal: when busy, postpone, otherwise return TRUE
* "when" == SIGNAL_BLOCK: Going to be busy, block signals
* "when" == SIGNAL_UNBLOCK: Going wait, unblock signals
* Returns TRUE when Vim should exit.
*/
int
handle_signal(sig)
int sig;
{
static int got_signal = 0;
static int blocked = TRUE;
switch (sig)
{
case SIGNAL_BLOCK: blocked = TRUE;
break;
case SIGNAL_UNBLOCK: blocked = FALSE;
if (got_signal != 0)
{
kill(getpid(), got_signal);
got_signal = 0;
}
break;
default: if (!blocked)
return TRUE; /* exit! */
got_signal = sig;
#ifdef SIGPWR
if (sig != SIGPWR)
#endif
got_int = TRUE; /* break any loops */
break;
}
return FALSE;
}
/*
* Check_win checks whether we have an interactive stdout.
*/
/* ARGSUSED */
int
mch_check_win(argc, argv)
int argc;
char **argv;
{
#ifdef OS2
/*
* Store argv[0], may be used for $VIM. Only use it if it is an absolute
* name, mostly it's just "vim" and found in the path, which is unusable.
*/
if (mch_isFullName(argv[0]))
exe_name = vim_strsave((char_u *)argv[0]);
#endif
if (isatty(1))
return OK;
return FAIL;
}
/*
* Return TRUE if the input comes from a terminal, FALSE otherwise.
*/
int
mch_input_isatty()
{
if (isatty(read_cmd_fd))
return TRUE;
return FALSE;
}
#ifdef FEAT_X11
# if defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H) \
&& (defined(FEAT_XCLIPBOARD) || defined(FEAT_TITLE))
static void xopen_message __ARGS((struct timeval *tvp));
/*
* Give a message about the elapsed time for opening the X window.
*/
static void
xopen_message(tvp)
struct timeval *tvp; /* must contain start time */
{
struct timeval end_tv;
/* Compute elapsed time. */
gettimeofday(&end_tv, NULL);
smsg((char_u *)_("Opening the X display took %ld msec"),
(end_tv.tv_sec - tvp->tv_sec) * 1000L
+ (end_tv.tv_usec - tvp->tv_usec) / 1000L);
}
# endif
#endif
#if defined(FEAT_X11) && (defined(FEAT_TITLE) || defined(FEAT_XCLIPBOARD))
/*
* A few functions shared by X11 title and clipboard code.
*/
static int x_error_handler __ARGS((Display *dpy, XErrorEvent *error_event));
static int x_error_check __ARGS((Display *dpy, XErrorEvent *error_event));
static int x_connect_to_server __ARGS((void));
static int test_x11_window __ARGS((Display *dpy));
static int got_x_error = FALSE;
/*
* X Error handler, otherwise X just exits! (very rude) -- webb
*/
static int
x_error_handler(dpy, error_event)
Display *dpy;
XErrorEvent *error_event;
{
XGetErrorText(dpy, error_event->error_code, (char *)IObuff, IOSIZE);
#if defined(FEAT_GUI_KDE)
/* KDE sometimes produces X error that we want to ignore */
STRCAT(IObuff, _("\nVim: Got X error but we continue...\n"));
mch_errmsg((char *)IObuff);
return 0;
#else
STRCAT(IObuff, _("\nVim: Got X error\n"));
/* We cannot print a message and continue, because no X calls are allowed
* here (causes my system to hang). Silently continuing might be an
* alternative... */
preserve_exit(); /* preserve files and exit */
return 0; /* NOTREACHED */
#endif
}
/*
* Another X Error handler, just used to check for errors.
*/
/* ARGSUSED */
static int
x_error_check(dpy, error_event)
Display *dpy;
XErrorEvent *error_event;
{
got_x_error = TRUE;
return 0;
}
#if defined(FEAT_X11) && defined(FEAT_XCLIPBOARD)
# if defined(HAVE_SETJMP_H)
/*
* An X IO Error handler, used to catch error while opening the display.
*/
static int x_IOerror_check __ARGS((Display *dpy));
/* ARGSUSED */
static int
x_IOerror_check(dpy)
Display *dpy;
{
/* This function should not return, it causes exit(). Longjump instead. */
LONGJMP(lc_jump_env, 1);
/*NOTREACHED*/
return 0;
}
# endif
/*
* An X IO Error handler, used to catch terminal errors.
*/
static int x_IOerror_handler __ARGS((Display *dpy));
/* ARGSUSED */
static int
x_IOerror_handler(dpy)
Display *dpy;
{
xterm_dpy = NULL;
x11_window = 0;
x11_display = NULL;
xterm_Shell = (Widget)0;
/* This function should not return, it causes exit(). Longjump instead. */
LONGJMP(x_jump_env, 1);
/*NOTREACHED*/
return 0;
}
#endif
/*
* Return TRUE when connection to the X server is desired.
*/
static int
x_connect_to_server()
{
regmatch_T regmatch;
#if defined(FEAT_CLIENTSERVER)
if (x_force_connect)
return TRUE;
#endif
if (x_no_connect)
return FALSE;
/* Check for a match with "exclude:" from 'clipboard'. */
if (clip_exclude_prog != NULL)
{
regmatch.rm_ic = FALSE; /* Don't ignore case */
regmatch.regprog = clip_exclude_prog;
if (vim_regexec(&regmatch, T_NAME, (colnr_T)0))
return FALSE;
}
return TRUE;
}
/*
* Test if "dpy" and x11_window are valid by getting the window title.
* I don't actually want it yet, so there may be a simpler call to use, but
* this will cause the error handler x_error_check() to be called if anything
* is wrong, such as the window pointer being invalid (as can happen when the
* user changes his DISPLAY, but not his WINDOWID) -- webb
*/
static int
test_x11_window(dpy)
Display *dpy;
{
int (*old_handler)();
XTextProperty text_prop;
old_handler = XSetErrorHandler(x_error_check);
got_x_error = FALSE;
if (XGetWMName(dpy, x11_window, &text_prop))
XFree((void *)text_prop.value);
XSync(dpy, False);
(void)XSetErrorHandler(old_handler);
if (p_verbose > 0 && got_x_error)
MSG(_("Testing the X display failed"));
return (got_x_error ? FAIL : OK);
}
#endif
#ifdef FEAT_TITLE
#ifdef FEAT_X11
static int get_x11_thing __ARGS((int get_title, int test_only));
/*
* try to get x11 window and display
*
* return FAIL for failure, OK otherwise
*/
static int
get_x11_windis()
{
char *winid;
static int result = -1;
#define XD_NONE 0 /* x11_display not set here */
#define XD_HERE 1 /* x11_display opened here */
#define XD_GUI 2 /* x11_display used from gui.dpy */
#define XD_XTERM 3 /* x11_display used from xterm_dpy */
static int x11_display_from = XD_NONE;
static int did_set_error_handler = FALSE;
if (!did_set_error_handler)
{
/* X just exits if it finds an error otherwise! */
(void)XSetErrorHandler(x_error_handler);
did_set_error_handler = TRUE;
}
#if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE)
if (gui.in_use)
{
/*
* If the X11 display was opened here before, for the window where Vim
* was started, close that one now to avoid a memory leak.
*/
if (x11_display_from == XD_HERE && x11_display != NULL)
{
XCloseDisplay(x11_display);
x11_display_from = XD_NONE;
}
if (gui_get_x11_windis(&x11_window, &x11_display) == OK)
{
x11_display_from = XD_GUI;
return OK;
}
x11_display = NULL;
return FAIL;
}
else if (x11_display_from == XD_GUI)
{
/* GUI must have stopped somehow, clear x11_display */
x11_window = 0;
x11_display = NULL;
x11_display_from = XD_NONE;
}
#endif
/* When started with the "-X" argument, don't try connecting. */
if (!x_connect_to_server())
return FAIL;
/*
* If WINDOWID not set, should try another method to find out
* what the current window number is. The only code I know for
* this is very complicated.
* We assume that zero is invalid for WINDOWID.
*/
if (x11_window == 0 && (winid = getenv("WINDOWID")) != NULL)
x11_window = (Window)atol(winid);
#ifdef FEAT_XCLIPBOARD
if (xterm_dpy != NULL && x11_window != 0)
{
/* Checked it already. */
if (x11_display_from == XD_XTERM)
return OK;
/*
* If the X11 display was opened here before, for the window where Vim
* was started, close that one now to avoid a memory leak.
*/
if (x11_display_from == XD_HERE && x11_display != NULL)
XCloseDisplay(x11_display);
x11_display = xterm_dpy;
x11_display_from = XD_XTERM;
if (test_x11_window(x11_display) == FAIL)
{
/* probably bad $WINDOWID */
x11_window = 0;
x11_display = NULL;
x11_display_from = XD_NONE;
return FAIL;
}
return OK;
}
#endif
if (x11_window == 0 || x11_display == NULL)
result = -1;
if (result != -1) /* Have already been here and set this */
return result; /* Don't do all these X calls again */
if (x11_window != 0 && x11_display == NULL)
{
#ifdef SET_SIG_ALARM
RETSIGTYPE (*sig_save)();
#endif
#if defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H)
struct timeval start_tv;
if (p_verbose > 0)
gettimeofday(&start_tv, NULL);
#endif
#ifdef SET_SIG_ALARM
/*
* Opening the Display may hang if the DISPLAY setting is wrong, or
* the network connection is bad. Set an alarm timer to get out.
*/
sig_alarm_called = FALSE;
sig_save = (RETSIGTYPE (*)())signal(SIGALRM,
(RETSIGTYPE (*)())sig_alarm);
alarm(2);
#endif
x11_display = XOpenDisplay(NULL);
#ifdef SET_SIG_ALARM
alarm(0);
signal(SIGALRM, (RETSIGTYPE (*)())sig_save);
if (p_verbose > 0 && sig_alarm_called)
MSG(_("Opening the X display timed out"));
#endif
if (x11_display != NULL)
{
# if defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H)
if (p_verbose > 0)
xopen_message(&start_tv);
# endif
if (test_x11_window(x11_display) == FAIL)
{
/* Maybe window id is bad */
x11_window = 0;
XCloseDisplay(x11_display);
x11_display = NULL;
}
else
x11_display_from = XD_HERE;
}
}
if (x11_window == 0 || x11_display == NULL)
return (result = FAIL);
return (result = OK);
}
/*
* Determine original x11 Window Title
*/
static int
get_x11_title(test_only)
int test_only;
{
return get_x11_thing(TRUE, test_only);
}
/*
* Determine original x11 Window icon
*/
static int
get_x11_icon(test_only)
int test_only;
{
int retval = FALSE;
retval = get_x11_thing(FALSE, test_only);
/* could not get old icon, use terminal name */
if (oldicon == NULL && !test_only)
{
if (STRNCMP(T_NAME, "builtin_", 8) == 0)
oldicon = T_NAME + 8;
else
oldicon = T_NAME;
}
return retval;
}
static int
get_x11_thing(get_title, test_only)
int get_title; /* get title string */
int test_only;
{
XTextProperty text_prop;
int retval = FALSE;
Status status;
if (get_x11_windis() == OK)
{
/* Get window/icon name if any */
if (get_title)
status = XGetWMName(x11_display, x11_window, &text_prop);
else
status = XGetWMIconName(x11_display, x11_window, &text_prop);
/*
* If terminal is xterm, then x11_window may be a child window of the
* outer xterm window that actually contains the window/icon name, so
* keep traversing up the tree until a window with a title/icon is
* found.
*/
/* Previously this was only done for xterm and alikes. I don't see a
* reason why it would fail for other terminal emulators.
* if (term_is_xterm) */
{
Window root;
Window parent;
Window win = x11_window;
Window *children;
unsigned int num_children;
while (!status || text_prop.value == NULL)
{
if (!XQueryTree(x11_display, win, &root, &parent, &children,
&num_children))
break;
if (children)
XFree((void *)children);
if (parent == root || parent == 0)
break;
win = parent;
if (get_title)
status = XGetWMName(x11_display, win, &text_prop);
else
status = XGetWMIconName(x11_display, win, &text_prop);
}
}
if (status && text_prop.value != NULL)
{
retval = TRUE;
if (!test_only)
{
#ifdef FEAT_XFONTSET
if (text_prop.encoding == XA_STRING)
{
#endif
if (get_title)
oldtitle = vim_strsave((char_u *)text_prop.value);
else
oldicon = vim_strsave((char_u *)text_prop.value);
#ifdef FEAT_XFONTSET
}
else
{
char **cl;
Status transform_status;
int n = 0;
transform_status = XmbTextPropertyToTextList(x11_display,
&text_prop,
&cl, &n);
if (transform_status >= Success && n > 0 && cl[0])
{
if (get_title)
oldtitle = vim_strsave((char_u *) cl[0]);
else
oldicon = vim_strsave((char_u *) cl[0]);
XFreeStringList(cl);
}
else
{
if (get_title)
oldtitle = vim_strsave((char_u *)text_prop.value);
else
oldicon = vim_strsave((char_u *)text_prop.value);
}
}
#endif
}
XFree((void *)text_prop.value);
}
}
return retval;
}
/* Are Xutf8 functions available? Avoid error from old compilers. */
#if defined(X_HAVE_UTF8_STRING) && defined(FEAT_MBYTE)
# if X_HAVE_UTF8_STRING
# define USE_UTF8_STRING
# endif
#endif
/*
* Set x11 Window Title
*
* get_x11_windis() must be called before this and have returned OK
*/
static void
set_x11_title(title)
char_u *title;
{
/* XmbSetWMProperties() and Xutf8SetWMProperties() should use a STRING
* when possible, COMPOUND_TEXT otherwise. COMPOUND_TEXT isn't
* supported everywhere and STRING doesn't work for multi-byte titles.
*/
#ifdef USE_UTF8_STRING
if (enc_utf8)
Xutf8SetWMProperties(x11_display, x11_window, (const char *)title,
NULL, NULL, 0, NULL, NULL, NULL);
else
#endif
{
#if XtSpecificationRelease >= 4
# ifdef FEAT_XFONTSET
XmbSetWMProperties(x11_display, x11_window, (const char *)title,
NULL, NULL, 0, NULL, NULL, NULL);
# else
XTextProperty text_prop;
char *c_title = (char *)title;
/* directly from example 3-18 "basicwin" of Xlib Programming Manual */
(void)XStringListToTextProperty(&c_title, 1, &text_prop);
XSetWMProperties(x11_display, x11_window, &text_prop,
NULL, NULL, 0, NULL, NULL, NULL);
# endif
#else
XStoreName(x11_display, x11_window, (char *)title);
#endif
}
XFlush(x11_display);
}
/*
* Set x11 Window icon
*
* get_x11_windis() must be called before this and have returned OK
*/
static void
set_x11_icon(icon)
char_u *icon;
{
/* See above for comments about using X*SetWMProperties(). */
#ifdef USE_UTF8_STRING
if (enc_utf8)
Xutf8SetWMProperties(x11_display, x11_window, NULL, (const char *)icon,
NULL, 0, NULL, NULL, NULL);
else
#endif
{
#if XtSpecificationRelease >= 4
# ifdef FEAT_XFONTSET
XmbSetWMProperties(x11_display, x11_window, NULL, (const char *)icon,
NULL, 0, NULL, NULL, NULL);
# else
XTextProperty text_prop;
char *c_icon = (char *)icon;
(void)XStringListToTextProperty(&c_icon, 1, &text_prop);
XSetWMProperties(x11_display, x11_window, NULL, &text_prop,
NULL, 0, NULL, NULL, NULL);
# endif
#else
XSetIconName(x11_display, x11_window, (char *)icon);
#endif
}
XFlush(x11_display);
}
#else /* FEAT_X11 */
/*ARGSUSED*/
static int
get_x11_title(test_only)
int test_only;
{
return FALSE;
}
static int
get_x11_icon(test_only)
int test_only;
{
if (!test_only)
{
if (STRNCMP(T_NAME, "builtin_", 8) == 0)
oldicon = T_NAME + 8;
else
oldicon = T_NAME;
}
return FALSE;
}
#endif /* FEAT_X11 */
int
mch_can_restore_title()
{
return get_x11_title(TRUE);
}
int
mch_can_restore_icon()
{
return get_x11_icon(TRUE);
}
/*
* Set the window title and icon.
*/
void
mch_settitle(title, icon)
char_u *title;
char_u *icon;
{
int type = 0;
static int recursive = 0;
if (T_NAME == NULL) /* no terminal name (yet) */
return;
if (title == NULL && icon == NULL) /* nothing to do */
return;
/* When one of the X11 functions causes a deadly signal, we get here again
* recursively. Avoid hanging then (something is probably locked). */
if (recursive)
return;
++recursive;
/*
* if the window ID and the display is known, we may use X11 calls
*/
#ifdef FEAT_X11
if (get_x11_windis() == OK)
type = 1;
#else
# if defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MAC) || defined(FEAT_GUI_GTK)
if (gui.in_use)
type = 1;
# endif
#endif
/*
* Note: if "t_TS" is set, title is set with escape sequence rather
* than x11 calls, because the x11 calls don't always work
*/
#ifdef FEAT_GUI_KDE
/* dont know why but KDE needs this one as we don't go through the next
* function... */
gui_mch_settitle(title, icon);
#endif
if ((type || *T_TS != NUL) && title != NULL)
{
if (oldtitle == NULL
#ifdef FEAT_GUI
&& !gui.in_use
#endif
) /* first call but not in GUI, save title */
(void)get_x11_title(FALSE);
if (*T_TS != NUL) /* it's OK if t_fs is empty */
term_settitle(title);
#ifdef FEAT_X11
else
# ifdef FEAT_GUI_GTK
if (!gui.in_use) /* don't do this if GTK+ is running */
# endif
set_x11_title(title); /* x11 */
#endif
#if defined(FEAT_GUI_GTK) \
|| defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MAC)
else
gui_mch_settitle(title, icon);
#endif
did_set_title = TRUE;
}
if ((type || *T_CIS != NUL) && icon != NULL)
{
if (oldicon == NULL
#ifdef FEAT_GUI
&& !gui.in_use
#endif
) /* first call, save icon */
get_x11_icon(FALSE);
if (*T_CIS != NUL)
{
out_str(T_CIS); /* set icon start */
out_str_nf(icon);
out_str(T_CIE); /* set icon end */
out_flush();
}
#ifdef FEAT_X11
else
# ifdef FEAT_GUI_GTK
if (!gui.in_use) /* don't do this if GTK+ is running */
# endif
set_x11_icon(icon); /* x11 */
#endif
did_set_icon = TRUE;
}
--recursive;
}
/*
* Restore the window/icon title.
* "which" is one of:
* 1 only restore title
* 2 only restore icon
* 3 restore title and icon
*/
void
mch_restore_title(which)
int which;
{
/* only restore the title or icon when it has been set */
mch_settitle(((which & 1) && did_set_title) ?
(oldtitle ? oldtitle : p_titleold) : NULL,
((which & 2) && did_set_icon) ? oldicon : NULL);
}
#endif /* FEAT_TITLE */
/*
* Return TRUE if "name" looks like some xterm name.
* Seiichi Sato mentioned that "mlterm" works like xterm.
*/
int
vim_is_xterm(name)
char_u *name;
{
if (name == NULL)
return FALSE;
return (STRNICMP(name, "xterm", 5) == 0
|| STRNICMP(name, "nxterm", 6) == 0
|| STRNICMP(name, "kterm", 5) == 0
|| STRNICMP(name, "mlterm", 6) == 0
|| STRNICMP(name, "rxvt", 4) == 0
|| STRCMP(name, "builtin_xterm") == 0);
}
#if defined(FEAT_MOUSE_TTY) || defined(PROTO)
/*
* Return non-zero when using an xterm mouse, according to 'ttymouse'.
* Return 1 for "xterm".
* Return 2 for "xterm2".
*/
int
use_xterm_mouse()
{
if (ttym_flags == TTYM_XTERM2)
return 2;
if (ttym_flags == TTYM_XTERM)
return 1;
return 0;
}
#endif
int
vim_is_iris(name)
char_u *name;
{
if (name == NULL)
return FALSE;
return (STRNICMP(name, "iris-ansi", 9) == 0
|| STRCMP(name, "builtin_iris-ansi") == 0);
}
int
vim_is_vt300(name)
char_u *name;
{
if (name == NULL)
return FALSE; /* actually all ANSI comp. terminals should be here */
/* catch VT100 - VT5xx */
return ((STRNICMP(name, "vt", 2) == 0
&& vim_strchr((char_u *)"12345", name[2]) != NULL)
|| STRCMP(name, "builtin_vt320") == 0);
}
/*
* Return TRUE if "name" is a terminal for which 'ttyfast' should be set.
* This should include all windowed terminal emulators.
*/
int
vim_is_fastterm(name)
char_u *name;
{
if (name == NULL)
return FALSE;
if (vim_is_xterm(name) || vim_is_vt300(name) || vim_is_iris(name))
return TRUE;
return ( STRNICMP(name, "hpterm", 6) == 0
|| STRNICMP(name, "sun-cmd", 7) == 0
|| STRNICMP(name, "screen", 6) == 0
|| STRNICMP(name, "dtterm", 6) == 0);
}
/*
* Insert user name in s[len].
* Return OK if a name found.
*/
int
mch_get_user_name(s, len)
char_u *s;
int len;
{
#ifdef VMS
STRNCPY((char *)s, cuserid(NULL), len);
return OK;
#else
return mch_get_uname(getuid(), s, len);
#endif
}
/*
* Insert user name for "uid" in s[len].
* Return OK if a name found.
*/
int
mch_get_uname(uid, s, len)
uid_t uid;
char_u *s;
int len;
{
#if defined(HAVE_PWD_H) && defined(HAVE_GETPWUID)
struct passwd *pw;
if ((pw = getpwuid(uid)) != NULL
&& pw->pw_name != NULL && *(pw->pw_name) != NUL)
{
STRNCPY(s, pw->pw_name, len);
s[len - 1] = NUL;
return OK;
}
#endif
sprintf((char *)s, "%d", (int)uid); /* assumes s is long enough */
return FAIL; /* a number is not a name */
}
/*
* Insert host name is s[len].
*/
#ifdef HAVE_SYS_UTSNAME_H
void
mch_get_host_name(s, len)
char_u *s;
int len;
{
struct utsname vutsname;
if (uname(&vutsname) < 0)
*s = NUL;
else
STRNCPY(s, vutsname.nodename, len);
s[len - 1] = NUL; /* make sure it's terminated */
}
#else /* HAVE_SYS_UTSNAME_H */
# ifdef HAVE_SYS_SYSTEMINFO_H
# define gethostname(nam, len) sysinfo(SI_HOSTNAME, nam, len)
# endif
void
mch_get_host_name(s, len)
char_u *s;
int len;
{
# ifdef VAXC
vaxc$gethostname((char *)s, len);
# else
gethostname((char *)s, len);
# endif
s[len - 1] = NUL; /* make sure it's terminated */
}
#endif /* HAVE_SYS_UTSNAME_H */
/*
* return process ID
*/
long
mch_get_pid()
{
return (long)getpid();
}
#if !defined(HAVE_STRERROR) && defined(USE_GETCWD)
static char *strerror __ARGS((int));
static char *
strerror(err)
int err;
{
extern int sys_nerr;
extern char *sys_errlist[];
static char er[20];
if (err > 0 && err < sys_nerr)
return (sys_errlist[err]);
sprintf(er, "Error %d", err);
return er;
}
#endif
/*
* Get name of current directory into buffer 'buf' of length 'len' bytes.
* Return OK for success, FAIL for failure.
*/
int
mch_dirname(buf, len)
char_u *buf;
int len;
{
#if defined(USE_GETCWD)
if (getcwd((char *)buf, len) == NULL)
{
STRCPY(buf, strerror(errno));
return FAIL;
}
return OK;
#else
return (getwd((char *)buf) != NULL ? OK : FAIL);
#endif
}
#if defined(OS2) || defined(PROTO)
/*
* Replace all slashes by backslashes.
* When 'shellslash' set do it the other way around.
*/
void
slash_adjust(p)
char_u *p;
{
while (*p)
{
if (*p == psepcN)
*p = psepc;
mb_ptr_adv(p);
}
}
#endif
/*
* Get absolute file name into buffer 'buf' of length 'len' bytes.
*
* return FAIL for failure, OK for success
*/
int
mch_FullName(fname, buf, len, force)
char_u *fname, *buf;
int len;
int force; /* also expand when already absolute path */
{
int l;
#ifdef OS2
int only_drive; /* file name is only a drive letter */
#endif
#ifdef HAVE_FCHDIR
int fd = -1;
static int dont_fchdir = FALSE; /* TRUE when fchdir() doesn't work */
#endif
char_u olddir[MAXPATHL];
char_u *p;
int retval = OK;
#ifdef VMS
fname = vms_fixfilename(fname);
#endif
/* expand it if forced or not an absolute path */
if (force || !mch_isFullName(fname))
{
/*
* If the file name has a path, change to that directory for a moment,
* and then do the getwd() (and get back to where we were).
* This will get the correct path name with "../" things.
*/
#ifdef OS2
only_drive = 0;
if (((p = vim_strrchr(fname, '/')) != NULL)
|| ((p = vim_strrchr(fname, '\\')) != NULL)
|| (((p = vim_strchr(fname, ':')) != NULL) && ++only_drive))
#else
if ((p = vim_strrchr(fname, '/')) != NULL)
#endif
{
#ifdef HAVE_FCHDIR
/*
* Use fchdir() if possible, it's said to be faster and more
* reliable. But on SunOS 4 it might not work. Check this by
* doing a fchdir() right now.
*/
if (!dont_fchdir)
{
fd = open(".", O_RDONLY | O_EXTRA, 0);
if (fd >= 0 && fchdir(fd) < 0)
{
close(fd);
fd = -1;
dont_fchdir = TRUE; /* don't try again */
}
}
#endif
/* Only change directory when we are sure we can return to where
* we are now. After doing "su" chdir(".") might not work. */
if (
#ifdef HAVE_FCHDIR
fd < 0 &&
#endif
(mch_dirname(olddir, MAXPATHL) == FAIL
|| mch_chdir((char *)olddir) != 0))
{
p = NULL; /* can't get current dir: don't chdir */
retval = FAIL;
}
else
{
#ifdef OS2
/*
* compensate for case where ':' from "D:" was the only
* path separator detected in the file name; the _next_
* character has to be removed, and then restored later.
*/
if (only_drive)
p++;
#endif
/* The directory is copied into buf[], to be able to remove
* the file name without changing it (could be a string in
* read-only memory) */
if (p - fname >= len)
retval = FAIL;
else
{
STRNCPY(buf, fname, p - fname);
buf[p - fname] = NUL;
if (mch_chdir((char *)buf))
retval = FAIL;
else
fname = p + 1;
*buf = NUL;
}
#ifdef OS2
if (only_drive)
{
p--;
if (retval != FAIL)
fname--;
}
#endif
}
}
if (mch_dirname(buf, len) == FAIL)
{
retval = FAIL;
*buf = NUL;
}
if (p != NULL)
{
#ifdef HAVE_FCHDIR
if (fd >= 0)
{
l = fchdir(fd);
close(fd);
}
else
#endif
l = mch_chdir((char *)olddir);
if (l != 0)
EMSG(_(e_prev_dir));
}
l = STRLEN(buf);
if (l >= len)
retval = FAIL;
#ifndef VMS
else
{
if (l > 0 && buf[l - 1] != '/' && *fname != NUL
&& STRCMP(fname, ".") != 0)
STRCAT(buf, "/");
}
#endif
}
/* Catch file names which are too long. */
if (retval == FAIL || STRLEN(buf) + STRLEN(fname) >= len)
return FAIL;
/* Do not append ".", "/dir/." is equal to "/dir". */
if (STRCMP(fname, ".") != 0)
STRCAT(buf, fname);
return OK;
}
/*
* Return TRUE if "fname" does not depend on the current directory.
*/
int
mch_isFullName(fname)
char_u *fname;
{
#ifdef __EMX__
return _fnisabs(fname);
#else
# ifdef VMS
return ( fname[0] == '/' || fname[0] == '.' ||
strchr((char *)fname,':') || strchr((char *)fname,'"') ||
(strchr((char *)fname,'[') && strchr((char *)fname,']'))||
(strchr((char *)fname,'<') && strchr((char *)fname,'>')) );
# else
return (*fname == '/' || *fname == '~');
# endif
#endif
}
/*
* Get file permissions for 'name'.
* Returns -1 when it doesn't exist.
*/
long
mch_getperm(name)
char_u *name;
{
struct stat statb;
/* Keep the #ifdef outside of stat(), it may be a macro. */
#ifdef VMS
if (stat((char *)vms_fixfilename(name), &statb))
#else
if (stat((char *)name, &statb))
#endif
return -1;
return statb.st_mode;
}
/*
* set file permission for 'name' to 'perm'
*
* return FAIL for failure, OK otherwise
*/
int
mch_setperm(name, perm)
char_u *name;
long perm;
{
return (chmod((char *)
#ifdef VMS
vms_fixfilename(name),
#else
name,
#endif
(mode_t)perm) == 0 ? OK : FAIL);
}
#if defined(HAVE_ACL) || defined(PROTO)
# ifdef HAVE_SYS_ACL_H
# include <sys/acl.h>
# endif
# ifdef HAVE_SYS_ACCESS_H
# include <sys/access.h>
# endif
# ifdef HAVE_SOLARIS_ACL
typedef struct vim_acl_solaris_T {
int acl_cnt;
aclent_t *acl_entry;
} vim_acl_solaris_T;
# endif
/*
* Return a pointer to the ACL of file "fname" in allocated memory.
* Return NULL if the ACL is not available for whatever reason.
*/
vim_acl_T
mch_get_acl(fname)
char_u *fname;
{
vim_acl_T ret = NULL;
#ifdef HAVE_POSIX_ACL
ret = (vim_acl_T)acl_get_file((char *)fname, ACL_TYPE_ACCESS);
#else
#ifdef HAVE_SOLARIS_ACL
vim_acl_solaris_T *aclent;
aclent = malloc(sizeof(vim_acl_solaris_T));
if ((aclent->acl_cnt = acl((char *)fname, GETACLCNT, 0, NULL)) < 0)
{
free(aclent);
return NULL;
}
aclent->acl_entry = malloc(aclent->acl_cnt * sizeof(aclent_t));
if (acl((char *)fname, GETACL, aclent->acl_cnt, aclent->acl_entry) < 0)
{
free(aclent->acl_entry);
free(aclent);
return NULL;
}
ret = (vim_acl_T)aclent;
#else
#if defined(HAVE_AIX_ACL)
int aclsize;
struct acl *aclent;
aclsize = sizeof(struct acl);
aclent = malloc(aclsize);
if (statacl((char *)fname, STX_NORMAL, aclent, aclsize) < 0)
{
if (errno == ENOSPC)
{
aclsize = aclent->acl_len;
aclent = realloc(aclent, aclsize);
if (statacl((char *)fname, STX_NORMAL, aclent, aclsize) < 0)
{
free(aclent);
return NULL;
}
}
else
{
free(aclent);
return NULL;
}
}
ret = (vim_acl_T)aclent;
#endif /* HAVE_AIX_ACL */
#endif /* HAVE_SOLARIS_ACL */
#endif /* HAVE_POSIX_ACL */
return ret;
}
/*
* Set the ACL of file "fname" to "acl" (unless it's NULL).
*/
void
mch_set_acl(fname, aclent)
char_u *fname;
vim_acl_T aclent;
{
if (aclent == NULL)
return;
#ifdef HAVE_POSIX_ACL
acl_set_file((char *)fname, ACL_TYPE_ACCESS, (acl_t)aclent);
#else
#ifdef HAVE_SOLARIS_ACL
acl((char *)fname, SETACL, ((vim_acl_solaris_T *)aclent)->acl_cnt,
((vim_acl_solaris_T *)aclent)->acl_entry);
#else
#ifdef HAVE_AIX_ACL
chacl((char *)fname, aclent, ((struct acl *)aclent)->acl_len);
#endif /* HAVE_AIX_ACL */
#endif /* HAVE_SOLARIS_ACL */
#endif /* HAVE_POSIX_ACL */
}
void
mch_free_acl(aclent)
vim_acl_T aclent;
{
if (aclent == NULL)
return;
#ifdef HAVE_POSIX_ACL
acl_free((acl_t)aclent);
#else
#ifdef HAVE_SOLARIS_ACL
free(((vim_acl_solaris_T *)aclent)->acl_entry);
free(aclent);
#else
#ifdef HAVE_AIX_ACL
free(aclent);
#endif /* HAVE_AIX_ACL */
#endif /* HAVE_SOLARIS_ACL */
#endif /* HAVE_POSIX_ACL */
}
#endif
/*
* Set hidden flag for "name".
*/
/* ARGSUSED */
void
mch_hide(name)
char_u *name;
{
/* can't hide a file */
}
/*
* return TRUE if "name" is a directory
* return FALSE if "name" is not a directory
* return FALSE for error
*/
int
mch_isdir(name)
char_u *name;
{
struct stat statb;
if (*name == NUL) /* Some stat()s don't flag "" as an error. */
return FALSE;
if (stat((char *)name, &statb))
return FALSE;
#ifdef _POSIX_SOURCE
return (S_ISDIR(statb.st_mode) ? TRUE : FALSE);
#else
return ((statb.st_mode & S_IFMT) == S_IFDIR ? TRUE : FALSE);
#endif
}
#if defined(FEAT_EVAL) || defined(PROTO)
static int executable_file __ARGS((char_u *name));
/*
* Return 1 if "name" is an executable file, 0 if not or it doesn't exist.
*/
static int
executable_file(name)
char_u *name;
{
struct stat st;
if (stat((char *)name, &st))
return 0;
return S_ISREG(st.st_mode) && mch_access((char *)name, X_OK) == 0;
}
/*
* Return 1 if "name" can be found in $PATH and executed, 0 if not.
* Return -1 if unknown.
*/
int
mch_can_exe(name)
char_u *name;
{
char_u *buf;
char_u *p, *e;
int retval;
/* If it's an absolute or relative path don't need to use $PATH. */
if (mch_isFullName(name) || (name[0] == '.' && (name[1] == '/'
|| (name[1] == '.' && name[2] == '/'))))
return executable_file(name);
p = (char_u *)getenv("PATH");
if (p == NULL || *p == NUL)
return -1;
buf = alloc((unsigned)(STRLEN(name) + STRLEN(p) + 2));
if (buf == NULL)
return -1;
/*
* Walk through all entries in $PATH to check if "name" exists there and
* is an executable file.
*/
for (;;)
{
e = (char_u *)strchr((char *)p, ':');
if (e == NULL)
e = p + STRLEN(p);
if (e - p <= 1) /* empty entry means current dir */
STRCPY(buf, "./");
else
{
STRNCPY(buf, p, e - p);
buf[e - p] = NUL;
add_pathsep(buf);
}
STRCAT(buf, name);
retval = executable_file(buf);
if (retval == 1)
break;
if (*e != ':')
break;
p = e + 1;
}
vim_free(buf);
return retval;
}
#endif
/*
* Check what "name" is:
* NODE_NORMAL: file or directory (or doesn't exist)
* NODE_WRITABLE: writable device, socket, fifo, etc.
* NODE_OTHER: non-writable things
*/
int
mch_nodetype(name)
char_u *name;
{
struct stat st;
if (stat((char *)name, &st))
return NODE_NORMAL;
if (S_ISREG(st.st_mode) || S_ISDIR(st.st_mode))
return NODE_NORMAL;
#ifndef OS2
if (S_ISBLK(st.st_mode)) /* block device isn't writable */
return NODE_OTHER;
#endif
/* Everything else is writable? */
return NODE_WRITABLE;
}
void
mch_early_init()
{
#ifdef HAVE_CHECK_STACK_GROWTH
int i;
check_stack_growth((char *)&i);
# ifdef HAVE_STACK_LIMIT
get_stack_limit();
# endif
#endif
/*
* Setup an alternative stack for signals. Helps to catch signals when
* running out of stack space.
* Use of sigaltstack() is preferred, it's more portable.
* Ignore any errors.
*/
#if defined(HAVE_SIGALTSTACK) || defined(HAVE_SIGSTACK)
signal_stack = malloc(SIGSTKSZ);
init_signal_stack();
#endif
}
static void exit_scroll __ARGS((void));
/*
* Output a newline when exiting.
* Make sure the newline goes to the same stream as the text.
*/
static void
exit_scroll()
{
if (silent_mode)
return;
if (newline_on_exit || msg_didout)
{
if (msg_use_printf())
{
if (info_message)
mch_msg("\n");
else
mch_errmsg("\r\n");
}
else
out_char('\n');
}
else
{
restore_cterm_colors(); /* get original colors back */
msg_clr_eos_force(); /* clear the rest of the display */
windgoto((int)Rows - 1, 0); /* may have moved the cursor */
}
}
void
mch_exit(r)
int r;
{
exiting = TRUE;
#if defined(FEAT_X11) && defined(FEAT_CLIPBOARD)
x11_export_final_selection();
#endif
#ifdef FEAT_GUI
if (!gui.in_use)
#endif
{
settmode(TMODE_COOK);
#ifdef FEAT_TITLE
mch_restore_title(3); /* restore xterm title and icon name */
#endif
/*
* When t_ti is not empty but it doesn't cause swapping terminal
* pages, need to output a newline when msg_didout is set. But when
* t_ti does swap pages it should not go to the shell page. Do this
* before stoptermcap().
*/
if (swapping_screen() && !newline_on_exit)
exit_scroll();
/* Stop termcap: May need to check for T_CRV response, which
* requires RAW mode. */
stoptermcap();
/*
* A newline is only required after a message in the alternate screen.
* This is set to TRUE by wait_return().
*/
if (!swapping_screen() || newline_on_exit)
exit_scroll();
/* Cursor may have been switched off without calling starttermcap()
* when doing "vim -u vimrc" and vimrc contains ":q". */
if (full_screen)
cursor_on();
}
out_flush();
ml_close_all(TRUE); /* remove all memfiles */
may_core_dump();
#ifdef FEAT_GUI
if (gui.in_use)
gui_exit(r);
#endif
#if defined(MACOS_X) && defined(FEAT_MBYTE)
mac_conv_cleanup();
#endif
#ifdef __QNX__
/* A core dump won't be created if the signal handler
* doesn't return, so we can't call exit() */
if (deadly_signal != 0)
return;
#endif
#ifdef FEAT_NETBEANS_INTG
if (usingNetbeans)
netbeans_send_disconnect();
#endif
exit(r);
}
static void
may_core_dump()
{
if (deadly_signal != 0)
{
signal(deadly_signal, SIG_DFL);
kill(getpid(), deadly_signal); /* Die using the signal we caught */
}
}
#ifndef VMS
void
mch_settmode(tmode)
int tmode;
{
static int first = TRUE;
/* Why is NeXT excluded here (and not in os_unixx.h)? */
#if defined(ECHOE) && defined(ICANON) && (defined(HAVE_TERMIO_H) || defined(HAVE_TERMIOS_H)) && !defined(__NeXT__)
/*
* for "new" tty systems
*/
# ifdef HAVE_TERMIOS_H
static struct termios told;
struct termios tnew;
# else
static struct termio told;
struct termio tnew;
# endif
if (first)
{
first = FALSE;
# if defined(HAVE_TERMIOS_H)
tcgetattr(read_cmd_fd, &told);
# else
ioctl(read_cmd_fd, TCGETA, &told);
# endif
}
tnew = told;
if (tmode == TMODE_RAW)
{
/*
* ~ICRNL enables typing ^V^M
*/
tnew.c_iflag &= ~ICRNL;
tnew.c_lflag &= ~(ICANON | ECHO | ISIG | ECHOE
# if defined(IEXTEN) && !defined(__MINT__)
| IEXTEN /* IEXTEN enables typing ^V on SOLARIS */
/* but it breaks function keys on MINT */
# endif
);
# ifdef ONLCR /* don't map NL -> CR NL, we do it ourselves */
tnew.c_oflag &= ~ONLCR;
# endif
tnew.c_cc[VMIN] = 1; /* return after 1 char */
tnew.c_cc[VTIME] = 0; /* don't wait */
}
else if (tmode == TMODE_SLEEP)
tnew.c_lflag &= ~(ECHO);
# if defined(HAVE_TERMIOS_H)
{
int n = 10;
/* A signal may cause tcsetattr() to fail (e.g., SIGCONT). Retry a
* few times. */
while (tcsetattr(read_cmd_fd, TCSANOW, &tnew) == -1
&& errno == EINTR && n > 0)
--n;
}
# else
ioctl(read_cmd_fd, TCSETA, &tnew);
# endif
#else
/*
* for "old" tty systems
*/
# ifndef TIOCSETN
# define TIOCSETN TIOCSETP /* for hpux 9.0 */
# endif
static struct sgttyb ttybold;
struct sgttyb ttybnew;
if (first)
{
first = FALSE;
ioctl(read_cmd_fd, TIOCGETP, &ttybold);
}
ttybnew = ttybold;
if (tmode == TMODE_RAW)
{
ttybnew.sg_flags &= ~(CRMOD | ECHO);
ttybnew.sg_flags |= RAW;
}
else if (tmode == TMODE_SLEEP)
ttybnew.sg_flags &= ~(ECHO);
ioctl(read_cmd_fd, TIOCSETN, &ttybnew);
#endif
curr_tmode = tmode;
}
/*
* Try to get the code for "t_kb" from the stty setting
*
* Even if termcap claims a backspace key, the user's setting *should*
* prevail. stty knows more about reality than termcap does, and if
* somebody's usual erase key is DEL (which, for most BSD users, it will
* be), they're going to get really annoyed if their erase key starts
* doing forward deletes for no reason. (Eric Fischer)
*/
void
get_stty()
{
char_u buf[2];
char_u *p;
/* Why is NeXT excluded here (and not in os_unixx.h)? */
#if defined(ECHOE) && defined(ICANON) && (defined(HAVE_TERMIO_H) || defined(HAVE_TERMIOS_H)) && !defined(__NeXT__)
/* for "new" tty systems */
# ifdef HAVE_TERMIOS_H
struct termios keys;
# else
struct termio keys;
# endif
# if defined(HAVE_TERMIOS_H)
if (tcgetattr(read_cmd_fd, &keys) != -1)
# else
if (ioctl(read_cmd_fd, TCGETA, &keys) != -1)
# endif
{
buf[0] = keys.c_cc[VERASE];
intr_char = keys.c_cc[VINTR];
#else
/* for "old" tty systems */
struct sgttyb keys;
if (ioctl(read_cmd_fd, TIOCGETP, &keys) != -1)
{
buf[0] = keys.sg_erase;
intr_char = keys.sg_kill;
#endif
buf[1] = NUL;
add_termcode((char_u *)"kb", buf, FALSE);
/*
* If <BS> and <DEL> are now the same, redefine <DEL>.
*/
p = find_termcode((char_u *)"kD");
if (p != NULL && p[0] == buf[0] && p[1] == buf[1])
do_fixdel(NULL);
}
#if 0
} /* to keep cindent happy */
#endif
}
#endif /* VMS */
#if defined(FEAT_MOUSE_TTY) || defined(PROTO)
/*
* Set mouse clicks on or off.
*/
void
mch_setmouse(on)
int on;
{
static int ison = FALSE;
int xterm_mouse_vers;
if (on == ison) /* return quickly if nothing to do */
return;
xterm_mouse_vers = use_xterm_mouse();
if (xterm_mouse_vers > 0)
{
if (on) /* enable mouse events, use mouse tracking if available */
out_str_nf((char_u *)
(xterm_mouse_vers > 1
? IF_EB("\033[?1002h", ESC_STR "[?1002h")
: IF_EB("\033[?1000h", ESC_STR "[?1000h")));
else /* disable mouse events, could probably always send the same */
out_str_nf((char_u *)
(xterm_mouse_vers > 1
? IF_EB("\033[?1002l", ESC_STR "[?1002l")
: IF_EB("\033[?1000l", ESC_STR "[?1000l")));
ison = on;
}
# ifdef FEAT_MOUSE_DEC
else if (ttym_flags == TTYM_DEC)
{
if (on) /* enable mouse events */
out_str_nf((char_u *)"\033[1;2'z\033[1;3'{");
else /* disable mouse events */
out_str_nf((char_u *)"\033['z");
ison = on;
}
# endif
# ifdef FEAT_MOUSE_GPM
else
{
if (on)
{
if (gpm_open())
ison = TRUE;
}
else
{
gpm_close();
ison = FALSE;
}
}
# endif
# ifdef FEAT_MOUSE_JSB
else
{
if (on)
{
/* D - Enable Mouse up/down messages
* L - Enable Left Button Reporting
* M - Enable Middle Button Reporting
* R - Enable Right Button Reporting
* K - Enable SHIFT and CTRL key Reporting
* + - Enable Advanced messaging of mouse moves and up/down messages
* Q - Quiet No Ack
* # - Numeric value of mouse pointer required
* 0 = Multiview 2000 cursor, used as standard
* 1 = Windows Arrow
* 2 = Windows I Beam
* 3 = Windows Hour Glass
* 4 = Windows Cross Hair
* 5 = Windows UP Arrow
*/
#ifdef JSBTERM_MOUSE_NONADVANCED /* Disables full feedback of pointer movements */
out_str_nf((char_u *)IF_EB("\033[0~ZwLMRK1Q\033\\",
ESC_STR "[0~ZwLMRK1Q" ESC_STR "\\"));
#else
out_str_nf((char_u *)IF_EB("\033[0~ZwLMRK+1Q\033\\",
ESC_STR "[0~ZwLMRK+1Q" ESC_STR "\\"));
#endif
ison = TRUE;
}
else
{
out_str_nf((char_u *)IF_EB("\033[0~ZwQ\033\\",
ESC_STR "[0~ZwQ" ESC_STR "\\"));
ison = FALSE;
}
}
# endif
# ifdef FEAT_MOUSE_PTERM
else
{
/* 1 = button press, 6 = release, 7 = drag, 1h...9l = right button */
if (on)
out_str_nf("\033[>1h\033[>6h\033[>7h\033[>1h\033[>9l");
else
out_str_nf("\033[>1l\033[>6l\033[>7l\033[>1l\033[>9h");
ison = on;
}
# endif
}
/*
* Set the mouse termcode, depending on the 'term' and 'ttymouse' options.
*/
void
check_mouse_termcode()
{
# ifdef FEAT_MOUSE_XTERM
if (use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
{
set_mouse_termcode(KS_MOUSE, (char_u *)(term_is_8bit(T_NAME)
? IF_EB("\233M", CSI_STR "M")
: IF_EB("\033[M", ESC_STR "[M")));
if (*p_mouse != NUL)
{
/* force mouse off and maybe on to send possibly new mouse
* activation sequence to the xterm, with(out) drag tracing. */
mch_setmouse(FALSE);
setmouse();
}
}
else
del_mouse_termcode(KS_MOUSE);
# endif
# ifdef FEAT_MOUSE_GPM
if (!use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
set_mouse_termcode(KS_MOUSE, (char_u *)IF_EB("\033MG", ESC_STR "MG"));
# endif
# ifdef FEAT_MOUSE_JSB
/* conflicts with xterm mouse: "\033[" and "\033[M" ??? */
if (!use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
set_mouse_termcode(KS_JSBTERM_MOUSE,
(char_u *)IF_EB("\033[0~zw", ESC_STR "[0~zw"));
else
del_mouse_termcode(KS_JSBTERM_MOUSE);
# endif
# ifdef FEAT_MOUSE_NET
/* There is no conflict, but one may type "ESC }" from Insert mode. Don't
* define it in the GUI or when using an xterm. */
if (!use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
set_mouse_termcode(KS_NETTERM_MOUSE,
(char_u *)IF_EB("\033}", ESC_STR "}"));
else
del_mouse_termcode(KS_NETTERM_MOUSE);
# endif
# ifdef FEAT_MOUSE_DEC
/* conflicts with xterm mouse: "\033[" and "\033[M" */
if (!use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
set_mouse_termcode(KS_DEC_MOUSE, (char_u *)(term_is_8bit(T_NAME)
? IF_EB("\233", CSI_STR) : IF_EB("\033[", ESC_STR "[")));
else
del_mouse_termcode(KS_DEC_MOUSE);
# endif
# ifdef FEAT_MOUSE_PTERM
/* same as the dec mouse */
if (!use_xterm_mouse()
# ifdef FEAT_GUI
&& !gui.in_use
# endif
)
set_mouse_termcode(KS_PTERM_MOUSE,
(char_u *) IF_EB("\033[", ESC_STR "["));
else
del_mouse_termcode(KS_PTERM_MOUSE);
# endif
}
#endif
/*
* set screen mode, always fails.
*/
/* ARGSUSED */
int
mch_screenmode(arg)
char_u *arg;
{
EMSG(_(e_screenmode));
return FAIL;
}
#ifndef VMS
/*
* Try to get the current window size:
* 1. with an ioctl(), most accurate method
* 2. from the environment variables LINES and COLUMNS
* 3. from the termcap
* 4. keep using the old values
* Return OK when size could be determined, FAIL otherwise.
*/
int
mch_get_shellsize()
{
long rows = 0;
long columns = 0;
char_u *p;
/*
* For OS/2 use _scrsize().
*/
# ifdef __EMX__
{
int s[2];
_scrsize(s);
columns = s[0];
rows = s[1];
}
# endif
/*
* 1. try using an ioctl. It is the most accurate method.
*
* Try using TIOCGWINSZ first, some systems that have it also define
* TIOCGSIZE but don't have a struct ttysize.
*/
# ifdef TIOCGWINSZ
{
struct winsize ws;
int fd = 1;
/* When stdout is not a tty, use stdin for the ioctl(). */
if (!isatty(fd) && isatty(read_cmd_fd))
fd = read_cmd_fd;
if (ioctl(fd, TIOCGWINSZ, &ws) == 0)
{
columns = ws.ws_col;
rows = ws.ws_row;
}
}
# else /* TIOCGWINSZ */
# ifdef TIOCGSIZE
{
struct ttysize ts;
int fd = 1;
/* When stdout is not a tty, use stdin for the ioctl(). */
if (!isatty(fd) && isatty(read_cmd_fd))
fd = read_cmd_fd;
if (ioctl(fd, TIOCGSIZE, &ts) == 0)
{
columns = ts.ts_cols;
rows = ts.ts_lines;
}
}
# endif /* TIOCGSIZE */
# endif /* TIOCGWINSZ */
/*
* 2. get size from environment
* When being POSIX compliant ('|' flag in 'cpoptions') this overrules
* the ioctl() values!
*/
if (columns == 0 || rows == 0 || vim_strchr(p_cpo, CPO_TSIZE) != NULL)
{
if ((p = (char_u *)getenv("LINES")))
rows = atoi((char *)p);
if ((p = (char_u *)getenv("COLUMNS")))
columns = atoi((char *)p);
}
#ifdef HAVE_TGETENT
/*
* 3. try reading "co" and "li" entries from termcap
*/
if (columns == 0 || rows == 0)
getlinecol(&columns, &rows);
#endif
/*
* 4. If everything fails, use the old values
*/
if (columns <= 0 || rows <= 0)
return FAIL;
Rows = rows;
Columns = columns;
return OK;
}
/*
* Try to set the window size to Rows and Columns.
*/
void
mch_set_shellsize()
{
if (*T_CWS)
{
/*
* NOTE: if you get an error here that term_set_winsize() is
* undefined, check the output of configure. It could probably not
* find a ncurses, termcap or termlib library.
*/
term_set_winsize((int)Rows, (int)Columns);
out_flush();
screen_start(); /* don't know where cursor is now */
}
}
#endif /* VMS */
/*
* Rows and/or Columns has changed.
*/
void
mch_new_shellsize()
{
/* Nothing to do. */
}
#ifndef USE_SYSTEM
static void append_ga_line __ARGS((garray_T *gap));
/*
* Append the text in "gap" below the cursor line and clear "gap".
*/
static void
append_ga_line(gap)
garray_T *gap;
{
/* Remove trailing CR. */
if (gap->ga_len > 0
&& !curbuf->b_p_bin
&& ((char_u *)gap->ga_data)[gap->ga_len - 1] == CAR)
--gap->ga_len;
ga_append(gap, NUL);
ml_append(curwin->w_cursor.lnum++, gap->ga_data, 0, FALSE);
gap->ga_len = 0;
}
#endif
int
mch_call_shell(cmd, options)
char_u *cmd;
int options; /* SHELL_*, see vim.h */
{
#ifdef VMS
char *ifn = NULL;
char *ofn = NULL;
#endif
int tmode = cur_tmode;
#ifdef USE_SYSTEM /* use system() to start the shell: simple but slow */
int x;
# ifndef __EMX__
char_u *newcmd; /* only needed for unix */
# else
/*
* Set the preferred shell in the EMXSHELL environment variable (but
* only if it is different from what is already in the environment).
* Emx then takes care of whether to use "/c" or "-c" in an
* intelligent way. Simply pass the whole thing to emx's system() call.
* Emx also starts an interactive shell if system() is passed an empty
* string.
*/
char_u *p, *old;
if (((old = (char_u *)getenv("EMXSHELL")) == NULL) || STRCMP(old, p_sh))
{
/* should check HAVE_SETENV, but I know we don't have it. */
p = alloc(10 + strlen(p_sh));
if (p)
{
sprintf((char *)p, "EMXSHELL=%s", p_sh);
putenv((char *)p); /* don't free the pointer! */
}
}
# endif
out_flush();
if (options & SHELL_COOKED)
settmode(TMODE_COOK); /* set to normal mode */
# ifdef __EMX__
if (cmd == NULL)
x = system(""); /* this starts an interactive shell in emx */
else
x = system((char *)cmd);
/* system() returns -1 when error occurs in starting shell */
if (x == -1 && !emsg_silent)
{
MSG_PUTS(_("\nCannot execute shell "));
msg_outtrans(p_sh);
msg_putchar('\n');
}
# else /* not __EMX__ */
if (cmd == NULL)
x = system((char *)p_sh);
else
{
# ifdef VMS
if (ofn = strchr((char *)cmd, '>'))
*ofn++ = '\0';
if (ifn = strchr((char *)cmd, '<'))
{
char *p;
*ifn++ = '\0';
p = strchr(ifn,' '); /* chop off any trailing spaces */
if (p)
*p = '\0';
}
if (ofn)
x = vms_sys((char *)cmd, ofn, ifn);
else
x = system((char *)cmd);
# else
newcmd = lalloc(STRLEN(p_sh)
+ (extra_shell_arg == NULL ? 0 : STRLEN(extra_shell_arg))
+ STRLEN(p_shcf) + STRLEN(cmd) + 4, TRUE);
if (newcmd == NULL)
x = 0;
else
{
sprintf((char *)newcmd, "%s %s %s %s", p_sh,
extra_shell_arg == NULL ? "" : (char *)extra_shell_arg,
(char *)p_shcf,
(char *)cmd);
x = system((char *)newcmd);
vim_free(newcmd);
}
# endif
}
# ifdef VMS
x = vms_sys_status(x);
# endif
if (emsg_silent)
;
else if (x == 127)
MSG_PUTS(_("\nCannot execute shell sh\n"));
# endif /* __EMX__ */
else if (x && !(options & SHELL_SILENT))
{
MSG_PUTS(_("\nshell returned "));
msg_outnum((long)x);
msg_putchar('\n');
}
if (tmode == TMODE_RAW)
settmode(TMODE_RAW); /* set to raw mode */
# ifdef FEAT_TITLE
resettitle();
# endif
return x;
#else /* USE_SYSTEM */ /* don't use system(), use fork()/exec() */
# define EXEC_FAILED 122 /* Exit code when shell didn't execute. Don't use
127, some shells use that already */
char_u *newcmd = NULL;
pid_t pid;
pid_t wpid = 0;
pid_t wait_pid = 0;
# ifdef HAVE_UNION_WAIT
union wait status;
# else
int status = -1;
# endif
int retval = -1;
char **argv = NULL;
int argc;
int i;
char_u *p;
int inquote;
int pty_master_fd = -1; /* for pty's */
# ifdef FEAT_GUI
int pty_slave_fd = -1;
char *tty_name;
# endif
int fd_toshell[2]; /* for pipes */
int fd_fromshell[2];
int pipe_error = FALSE;
# ifdef HAVE_SETENV
char envbuf[50];
# else
static char envbuf_Rows[20];
static char envbuf_Columns[20];
# endif
int did_settmode = FALSE; /* TRUE when settmode(TMODE_RAW) called */
out_flush();
if (options & SHELL_COOKED)
settmode(TMODE_COOK); /* set to normal mode */
/*
* 1: find number of arguments
* 2: separate them and built argv[]
*/
newcmd = vim_strsave(p_sh);
if (newcmd == NULL) /* out of memory */
goto error;
for (i = 0; i < 2; ++i)
{
p = newcmd;
inquote = FALSE;
argc = 0;
for (;;)
{
if (i == 1)
argv[argc] = (char *)p;
++argc;
while (*p && (inquote || (*p != ' ' && *p != TAB)))
{
if (*p == '"')
inquote = !inquote;
++p;
}
if (*p == NUL)
break;
if (i == 1)
*p++ = NUL;
p = skipwhite(p);
}
if (i == 0)
{
argv = (char **)alloc((unsigned)((argc + 4) * sizeof(char *)));
if (argv == NULL) /* out of memory */
goto error;
}
}
if (cmd != NULL)
{
if (extra_shell_arg != NULL)
argv[argc++] = (char *)extra_shell_arg;
argv[argc++] = (char *)p_shcf;
argv[argc++] = (char *)cmd;
}
argv[argc] = NULL;
/*
* For the GUI, when writing the output into the buffer and when reading
* input from the buffer: Try using a pseudo-tty to get the stdin/stdout
* of the executed command into the Vim window. Or use a pipe.
*/
if ((options & (SHELL_READ|SHELL_WRITE))
# ifdef FEAT_GUI
|| (gui.in_use && show_shell_mess)
# endif
)
{
# ifdef FEAT_GUI
/*
* Try to open a master pty.
* If this works, open the slave pty.
* If the slave can't be opened, close the master pty.
*/
if (p_guipty && !(options & (SHELL_READ|SHELL_WRITE)))
{
pty_master_fd = OpenPTY(&tty_name); /* open pty */
if (pty_master_fd >= 0 && ((pty_slave_fd =
open(tty_name, O_RDWR | O_EXTRA, 0)) < 0))
{
close(pty_master_fd);
pty_master_fd = -1;
}
}
/*
* If not opening a pty or it didn't work, try using pipes.
*/
if (pty_master_fd < 0)
# endif
{
pipe_error = (pipe(fd_toshell) < 0);
if (!pipe_error) /* pipe create OK */
{
pipe_error = (pipe(fd_fromshell) < 0);
if (pipe_error) /* pipe create failed */
{
close(fd_toshell[0]);
close(fd_toshell[1]);
}
}
if (pipe_error)
{
MSG_PUTS(_("\nCannot create pipes\n"));
out_flush();
}
}
}
if (!pipe_error) /* pty or pipe opened or not used */
{
# ifdef __BEOS__
beos_cleanup_read_thread();
# endif
if ((pid = fork()) == -1) /* maybe we should use vfork() */
{
MSG_PUTS(_("\nCannot fork\n"));
if ((options & (SHELL_READ|SHELL_WRITE))
# ifdef FEAT_GUI
|| (gui.in_use && show_shell_mess)
# endif
)
{
# ifdef FEAT_GUI
if (pty_master_fd >= 0) /* close the pseudo tty */
{
close(pty_master_fd);
close(pty_slave_fd);
}
else /* close the pipes */
# endif
{
close(fd_toshell[0]);
close(fd_toshell[1]);
close(fd_fromshell[0]);
close(fd_fromshell[1]);
}
}
}
else if (pid == 0) /* child */
{
reset_signals(); /* handle signals normally */
if (!show_shell_mess || (options & SHELL_EXPAND))
{
int fd;
/*
* Don't want to show any message from the shell. Can't just
* close stdout and stderr though, because some systems will
* break if you try to write to them after that, so we must
* use dup() to replace them with something else -- webb
* Connect stdin to /dev/null too, so ":n `cat`" doesn't hang,
* waiting for input.
*/
fd = open("/dev/null", O_RDWR | O_EXTRA, 0);
fclose(stdin);
fclose(stdout);
fclose(stderr);
/*
* If any of these open()'s and dup()'s fail, we just continue
* anyway. It's not fatal, and on most systems it will make
* no difference at all. On a few it will cause the execvp()
* to exit with a non-zero status even when the completion
* could be done, which is nothing too serious. If the open()
* or dup() failed we'd just do the same thing ourselves
* anyway -- webb
*/
if (fd >= 0)
{
dup(fd); /* To replace stdin (file descriptor 0) */
dup(fd); /* To replace stdout (file descriptor 1) */
dup(fd); /* To replace stderr (file descriptor 2) */
/* Don't need this now that we've duplicated it */
close(fd);
}
}
else if ((options & (SHELL_READ|SHELL_WRITE))
# ifdef FEAT_GUI
|| gui.in_use
# endif
)
{
# ifdef HAVE_SETSID
(void)setsid();
# endif
# ifdef FEAT_GUI
/* push stream discipline modules */
if (options & SHELL_COOKED)
SetupSlavePTY(pty_slave_fd);
# ifdef TIOCSCTTY
/* try to become controlling tty (probably doesn't work,
* unless run by root) */
ioctl(pty_slave_fd, TIOCSCTTY, (char *)NULL);
# endif
# endif
/* Simulate to have a dumb terminal (for now) */
# ifdef HAVE_SETENV
setenv("TERM", "dumb", 1);
sprintf((char *)envbuf, "%ld", Rows);
setenv("ROWS", (char *)envbuf, 1);
sprintf((char *)envbuf, "%ld", Rows);
setenv("LINES", (char *)envbuf, 1);
sprintf((char *)envbuf, "%ld", Columns);
setenv("COLUMNS", (char *)envbuf, 1);
# else
/*
* Putenv does not copy the string, it has to remain valid.
* Use a static array to avoid loosing allocated memory.
*/
putenv("TERM=dumb");
sprintf(envbuf_Rows, "ROWS=%ld", Rows);
putenv(envbuf_Rows);
sprintf(envbuf_Rows, "LINES=%ld", Rows);
putenv(envbuf_Rows);
sprintf(envbuf_Columns, "COLUMNS=%ld", Columns);
putenv(envbuf_Columns);
# endif
# ifdef FEAT_GUI
if (pty_master_fd >= 0)
{
close(pty_master_fd); /* close master side of pty */
/* set up stdin/stdout/stderr for the child */
close(0);
dup(pty_slave_fd);
close(1);
dup(pty_slave_fd);
close(2);
dup(pty_slave_fd);
close(pty_slave_fd); /* has been dupped, close it now */
}
else
# endif
{
/* set up stdin for the child */
close(fd_toshell[1]);
close(0);
dup(fd_toshell[0]);
close(fd_toshell[0]);
/* set up stdout for the child */
close(fd_fromshell[0]);
close(1);
dup(fd_fromshell[1]);
close(fd_fromshell[1]);
/* set up stderr for the child */
close(2);
dup(1);
}
}
/*
* There is no type cast for the argv, because the type may be
* different on different machines. This may cause a warning
* message with strict compilers, don't worry about it.
* Call _exit() instead of exit() to avoid closing the connection
* to the X server (esp. with GTK, which uses atexit()).
*/
execvp(argv[0], argv);
_exit(EXEC_FAILED); /* exec failed, return failure code */
}
else /* parent */
{
/*
* While child is running, ignore terminating signals.
* Do catch CTRL-C, so that "got_int" is set.
*/
catch_signals(SIG_IGN, SIG_ERR);
catch_int_signal();
/*
* For the GUI we redirect stdin, stdout and stderr to our window.
* This is also used to pipe stdin/stdout to/from the external
* command.
*/
if ((options & (SHELL_READ|SHELL_WRITE))
# ifdef FEAT_GUI
|| (gui.in_use && show_shell_mess)
# endif
)
{
# define BUFLEN 100 /* length for buffer, pseudo tty limit is 128 */
char_u buffer[BUFLEN + 1];
# ifdef FEAT_MBYTE
int buffer_off = 0; /* valid bytes in buffer[] */
# endif
char_u ta_buf[BUFLEN + 1]; /* TypeAHead */
int ta_len = 0; /* valid bytes in ta_buf[] */
int len;
int p_more_save;
int old_State;
int c;
int toshell_fd;
int fromshell_fd;
garray_T ga;
int noread_cnt;
# ifdef FEAT_GUI
if (pty_master_fd >= 0)
{
close(pty_slave_fd); /* close slave side of pty */
fromshell_fd = pty_master_fd;
toshell_fd = dup(pty_master_fd);
}
else
# endif
{
close(fd_toshell[0]);
close(fd_fromshell[1]);
toshell_fd = fd_toshell[1];
fromshell_fd = fd_fromshell[0];
}
/*
* Write to the child if there are typed characters.
* Read from the child if there are characters available.
* Repeat the reading a few times if more characters are
* available. Need to check for typed keys now and then, but
* not too often (delays when no chars are available).
* This loop is quit if no characters can be read from the pty
* (WaitForChar detected special condition), or there are no
* characters available and the child has exited.
* Only check if the child has exited when there is no more
* output. The child may exit before all the output has
* been printed.
*
* Currently this busy loops!
* This can probably dead-lock when the write blocks!
*/
p_more_save = p_more;
p_more = FALSE;
old_State = State;
State = EXTERNCMD; /* don't redraw at window resize */
if (options & SHELL_WRITE && toshell_fd >= 0)
{
/* Fork a process that will write the lines to the
* external program. */
if ((wpid = fork()) == -1)
{
MSG_PUTS(_("\nCannot fork\n"));
}
else if (wpid == 0)
{
linenr_T lnum = curbuf->b_op_start.lnum;
int written = 0;
char_u *p = ml_get(lnum);
char_u *s;
size_t l;
/* child */
close(fromshell_fd);
for (;;)
{
l = STRLEN(p + written);
if (l == 0)
len = 0;
else if (p[written] == NL)
/* NL -> NUL translation */
len = write(toshell_fd, "", (size_t)1);
else
{
s = vim_strchr(p + written, NL);
len = write(toshell_fd, (char *)p + written,
s == NULL ? l : s - (p + written));
}
if (len == l)
{
/* Finished a line, add a NL, unless this line
* should not have one. */
if (lnum != curbuf->b_op_end.lnum
|| !curbuf->b_p_bin
|| (lnum != write_no_eol_lnum
&& (lnum !=
curbuf->b_ml.ml_line_count
|| curbuf->b_p_eol)))
write(toshell_fd, "\n", (size_t)1);
++lnum;
if (lnum > curbuf->b_op_end.lnum)
{
/* finished all the lines, close pipe */
close(toshell_fd);
toshell_fd = -1;
break;
}
p = ml_get(lnum);
written = 0;
}
else if (len > 0)
written += len;
}
_exit(0);
}
else
{
close(toshell_fd);
toshell_fd = -1;
}
}
if (options & SHELL_READ)
ga_init2(&ga, 1, BUFLEN);
noread_cnt = 0;
for (;;)
{
/*
* Check if keys have been typed, write them to the child
* if there are any. Don't do this if we are expanding
* wild cards (would eat typeahead). Don't get extra
* characters when we already have one.
* Don't read characters unless we didn't get output for a
* while, avoids that ":r !ls" eats typeahead.
*/
len = 0;
if (!(options & SHELL_EXPAND)
&& (ta_len > 0
|| (noread_cnt > 4
&& (len = ui_inchar(ta_buf,
BUFLEN, 10L, 0)) > 0)))
{
/*
* For pipes:
* Check for CTRL-C: send interrupt signal to child.
* Check for CTRL-D: EOF, close pipe to child.
*/
if (len == 1 && (pty_master_fd < 0 || cmd != NULL))
{
# ifdef SIGINT
/*
* Send SIGINT to the child's group or all
* processes in our group.
*/
if (ta_buf[ta_len] == Ctrl_C
|| ta_buf[ta_len] == intr_char)
{
# ifdef HAVE_SETSID
kill(-pid, SIGINT);
# else
kill(0, SIGINT);
# endif
if (wpid > 0)
kill(wpid, SIGINT);
}
# endif
if (pty_master_fd < 0 && toshell_fd >= 0
&& ta_buf[ta_len] == Ctrl_D)
{
close(toshell_fd);
toshell_fd = -1;
}
}
/* replace K_BS by <BS> and K_DEL by <DEL> */
for (i = ta_len; i < ta_len + len; ++i)
{
if (ta_buf[i] == CSI && len - i > 2)
{
c = TERMCAP2KEY(ta_buf[i + 1], ta_buf[i + 2]);
if (c == K_DEL || c == K_KDEL || c == K_BS)
{
mch_memmove(ta_buf + i + 1, ta_buf + i + 3,
(size_t)(len - i - 2));
if (c == K_DEL || c == K_KDEL)
ta_buf[i] = DEL;
else
ta_buf[i] = Ctrl_H;
len -= 2;
}
}
else if (ta_buf[i] == '\r')
ta_buf[i] = '\n';
# ifdef FEAT_MBYTE
if (has_mbyte)
i += (*mb_ptr2len_check)(ta_buf + i) - 1;
# endif
}
/*
* For pipes: echo the typed characters.
* For a pty this does not seem to work.
*/
if (pty_master_fd < 0)
{
for (i = ta_len; i < ta_len + len; ++i)
{
if (ta_buf[i] == '\n' || ta_buf[i] == '\b')
msg_putchar(ta_buf[i]);
# ifdef FEAT_MBYTE
else if (has_mbyte)
{
int l = (*mb_ptr2len_check)(ta_buf + i);
msg_outtrans_len(ta_buf + i, l);
i += l - 1;
}
# endif
else
msg_outtrans_len(ta_buf + i, 1);
}
windgoto(msg_row, msg_col);
out_flush();
}
ta_len += len;
/*
* Write the characters to the child, unless EOF has
* been typed for pipes. Write one character at a
* time, to avoid loosing too much typeahead.
* When writing buffer lines, drop the typed
* characters (only check for CTRL-C).
*/
if (options & SHELL_WRITE)
ta_len = 0;
else if (toshell_fd >= 0)
{
len = write(toshell_fd, (char *)ta_buf, (size_t)1);
if (len > 0)
{
ta_len -= len;
mch_memmove(ta_buf, ta_buf + len, ta_len);
noread_cnt = 0;
}
}
}
if (got_int)
{
/* CTRL-C sends a signal to the child, we ignore it
* ourselves */
# ifdef HAVE_SETSID
kill(-pid, SIGINT);
# else
kill(0, SIGINT);
# endif
if (wpid > 0)
kill(wpid, SIGINT);
got_int = FALSE;
}
/*
* Check if the child has any characters to be printed.
* Read them and write them to our window. Repeat this as
* long as there is something to do, avoid the 10ms wait
* for mch_inchar(), or sending typeahead characters to
* the external process.
* TODO: This should handle escape sequences, compatible
* to some terminal (vt52?).
*/
++noread_cnt;
while (RealWaitForChar(fromshell_fd, 10L, NULL))
{
len = read(fromshell_fd, (char *)buffer
# ifdef FEAT_MBYTE
+ buffer_off, (size_t)(BUFLEN - buffer_off)
# else
, (size_t)BUFLEN
# endif
);
if (len <= 0) /* end of file or error */
goto finished;
noread_cnt = 0;
if (options & SHELL_READ)
{
/* Do NUL -> NL translation, append NL separated
* lines to the current buffer. */
for (i = 0; i < len; ++i)
{
if (buffer[i] == NL)
append_ga_line(&ga);
else if (buffer[i] == NUL)
ga_append(&ga, NL);
else
ga_append(&ga, buffer[i]);
}
}
# ifdef FEAT_MBYTE
else if (has_mbyte)
{
int l;
len += buffer_off;
buffer[len] = NUL;
/* Check if the last character in buffer[] is
* incomplete, keep these bytes for the next
* round. */
for (p = buffer; p < buffer + len; p += l)
{
if (enc_utf8) /* exclude composing chars */
l = utf_ptr2len_check(p);
else
l = (*mb_ptr2len_check)(p);
if (l == 0)
l = 1; /* NUL byte? */
else if (MB_BYTE2LEN(*p) != l)
break;
}
if (p == buffer) /* no complete character */
{
/* avoid getting stuck at an illegal byte */
if (len >= 12)
++p;
else
{
buffer_off = len;
continue;
}
}
c = *p;
*p = NUL;
msg_puts(buffer);
if (p < buffer + len)
{
*p = c;
buffer_off = (buffer + len) - p;
mch_memmove(buffer, p, buffer_off);
continue;
}
buffer_off = 0;
}
# endif /* FEAT_MBYTE */
else
{
buffer[len] = NUL;
msg_puts(buffer);
}
windgoto(msg_row, msg_col);
cursor_on();
out_flush();
if (got_int)
break;
}
/*
* Check if the child still exists, before checking for
* typed characters (otherwise we would loose typeahead).
*/
# ifdef __NeXT__
wait_pid = wait4(pid, &status, WNOHANG, (struct rusage *) 0);
# else
wait_pid = waitpid(pid, &status, WNOHANG);
# endif
if ((wait_pid == (pid_t)-1 && errno == ECHILD)
|| (wait_pid == pid && WIFEXITED(status)))
{
wait_pid = pid;
break;
}
wait_pid = 0;
}
finished:
p_more = p_more_save;
if (options & SHELL_READ)
{
if (ga.ga_len > 0)
{
append_ga_line(&ga);
/* remember that the NL was missing */
write_no_eol_lnum = curwin->w_cursor.lnum;
}
else
write_no_eol_lnum = 0;
ga_clear(&ga);
}
/*
* Give all typeahead that wasn't used back to ui_inchar().
*/
if (ta_len)
ui_inchar_undo(ta_buf, ta_len);
State = old_State;
if (toshell_fd >= 0)
close(toshell_fd);
close(fromshell_fd);
}
/*
* Wait until our child has exited.
* Ignore wait() returning pids of other children and returning
* because of some signal like SIGWINCH.
* Don't wait if wait_pid was already set above, indicating the
* child already exited.
*/
while (wait_pid != pid)
{
# ifdef _THREAD_SAFE
/* Ugly hack: when compiled with Python threads are probably
* used, in which case wait() sometimes hangs for no obvious
* reason. Use waitpid() instead and loop (like the GUI). */
# ifdef __NeXT__
wait_pid = wait4(pid, &status, WNOHANG, (struct rusage *)0);
# else
wait_pid = waitpid(pid, &status, WNOHANG);
# endif
if (wait_pid == 0)
{
/* Wait for 1/100 sec before trying again. */
mch_delay(10L, TRUE);
continue;
}